C4

Vertical 20 C4 Reel for Spearguns

The Vertical 20 Reel by C4 is a vertical reel designed specifically for spearguns used in spearfishing, entirely designed, manufactured, and hand-assembled in Italy.

The frame and winding lever are made from AISI 316L stainless steel, treated and chamfered to minimize friction that could damage the line during use, ensuring greater durability and mechanical strength in underwater environments.

The spool, as well as the drag and rewind knobs, are machined from a single solid block of floating plastic material. This material is lightweight while maintaining high strength, ensuring efficient line management and optimal overall lightness during the dive.

The drag system is designed not to completely lock the spool, increasing safety in the water and allowing smooth, trouble-free rewinding even in dynamic situations or when the line is under tension.

The position of the pins, very close to the spool, allows optimal line payout and retrieval, improving the reel’s responsiveness and control during freedive spearfishing.

This reel is equipped with a bracket for classic attachment to the speargun, but it can also be easily screwed to the trigger guard, providing versatile mounting on spearguns for freedive spearfishing.

Technical Specifications

• Frame and mechanism material: treated AISI 316L Stainless Steel
• Spool and knobs: floating plastic material machined from solid stock
• Line capacity: 20 meters of 1.5 mm diameter line
• Partially free drag for safety and smooth operation
• Attachment: classic bracket or screw mount to the trigger guard

Technical Benefits for Freedive Spearfishing

• Minimized friction to preserve line integrity during dives
• High corrosion resistance thanks to AISI 316L stainless steel
• Lightweight, buoyant spool for easier handling in the water
• Drag system that increases safety without compromising control
• Versatile mounting to fit the most common spearguns

Plasma Mirror Lenses Mask for Freediving and Spearfishing

The Plasma Mirror Lenses mask is made from hypoallergenic silicone and designed specifically for the needs of spearfishing and freediving, even at depth. Its advanced design ensures comfort and functionality during dives.

Technical Features

• Extremely low internal volume of 113 cm³, achieved through an innovative molding technique that creates the structure in a single piece
• Optimized field of view thanks to the lens geometry and the close distance of the eye lenses to the eyes
• Soft silicone skirt with variable thicknesses and internal matte finish, reducing reflections and glare on the lenses for improved visibility
• Adjustable, anatomical silicone strap, equipped with a polycarbonate quick-release system for ease of use and safety
• Mirrored ultra-resistant tempered glass lenses, ensuring protection and durability even during extended dives

Variants and Colors

Available in three colors designed specifically for the underwater environment:

• Black
• Camu
• Ocean

Benefits for Freediving and Spearfishing

The low-volume design supports better mask equalization during descents, reducing muscle fatigue and improving dive fluidity. The close positioning of the lenses to the eyes increases the field of view, essential for accuracy and safety in spearfishing.

The hypoallergenic silicone and soft skirt provide a comfortable, watertight fit, while the internal matte finish eliminates reflections that could affect visual perception underwater.

Plasma XL Mask for Freediving and Spearfishing

The Plasma XL mask is specifically designed for freediving and spearfishing, including deep-depth use. Made from hypoallergenic silicone, it ensures long-lasting comfort and helps protect the skin from irritation.

Design and Comfort

Compared to the standard Plasma version, the Plasma XL features dimensions increased by approximately 10%, providing a fit suitable for a wider range of users. Despite its larger size, the mask’s internal volume remains extremely low, making equalization easier during the dive.

The soft 50°shA silicone skirt, with variable thicknesses and an internal matte finish, ensures an optimal seal and reduces internal reflections, improving underwater visibility.

Field of View and Technology

The mask uses an innovative molding technique that allows the structure to be made in a single piece, reducing the distance between the lenses and the eyes. This optimizes the field of view, providing greater perception of the underwater environment and improving visual efficiency while spearfishing.

The lenses are made from 3 mm ultra-clear tempered glass, ensuring mechanical strength and distortion-free visual clarity.

Components and Adjustment

• Adjustable anatomical Strap in silicone for personalized comfort and a secure fit.
• Quick-release Strap system in polycarbonate, strong and reliable, for easier handling in freediving conditions.

Technical Features

• Skirt material: 50°shA hypoallergenic silicone with internal matte finish
• Lenses: 3 mm thick ultra-clear tempered glass
• Available color: white

Plasma C4 Mask for Freediving and Spearfishing

The Plasma mask by C4 is designed for freedivers and spearfishers who require a technical, ergonomic, and compact mask. Its design features an extremely low internal volume, ideal for equalization during freediving and deep spearfishing dives.

Technical Features

• Lenses positioned very close to the eyes to significantly increase the field of view during the dive.
• Skirt made from soft silicone with differentiated thicknesses, ensuring improved comfort and a better watertight seal.
• Matte inner skirt to reduce distracting reflections and glare on the lens, improving underwater visibility.
• Tempered lens, ultra-strong and impact-resistant, suitable for typical freediving and spearfishing conditions.
• Anatomical silicone strap, adjustable to ensure a stable and comfortable fit throughout every dive.

Materials and Design

The Plasma mask uses high-quality silicone for the skirt and strap, offering elasticity, long-lasting durability, and thermal comfort. Its compact shape reduces internal volume, making equalization and pressure management easier during freediving descents.

Color Variants

Available in 5 versions to suit individual preferences and underwater environments:

• Black
• White
• Camo
• Silver
• Ocean

Applications

The Plasma is recommended for freediving and spearfishing, thanks to its combination of low internal volume, wide field of view, and comfort, effectively supporting control and visibility needs during dives.

Condor C4 Mask - AntiFog for Freediving and Spearfishing

The Condor C4 - AntiFog mask is designed to meet the needs of every underwater discipline, including freediving, spearfishing, snorkeling, and scuba diving, ensuring an optimal balance of functionality and comfort.

Design and Hydrodynamics

Featuring a highly hydrodynamic frameless design, the mask minimizes internal spaces and volume, optimizing visibility with a wide field of view and an especially low volume-to-visibility ratio. Its shapes are designed to adapt perfectly to every face type, ensuring excellent elasticity and sealing.

Comfort and Fit

• Skirt made of soft hypoallergenic, matte, anti-reflective silicone, ensuring a perfect seal and reducing annoying reflections below the surface.
• Pre-shaped nose pocket with differentiated thicknesses and hardness levels to make equalization quick and easy during freediving descents.
• Adjustable strap in soft silicone, with a micrometric adjustment buckle and angled MPS (Morphological Pivoting System) attachments that improve seal and comfort during the dive.
• Anti-entanglement rear strap equipped with a loop for attaching the snorkel, increasing practicality during use in the water.

Lenses and Anti-Fog Finish

The lenses are made of tempered glass, designed with shapes and positions calibrated to different human interpupillary distances for optimal visual perception. The integrated anti-fog finish permanently eliminates fogging issues, avoiding the need for pre-dive treatments that are often not 100% effective.

Main Technical Features

• Frameless design to reduce internal volume and improve hydrodynamics
• Soft hypoallergenic, anti-reflective silicone for high elasticity and thermal comfort
• Pre-shaped nose pocket with variable hardness to facilitate equalization at depth
• Angled MPS strap attachment with micrometric buckle for precise adjustments
• Tempered glass lenses with AntiFog finish for consistently clear visibility
• Anti-entanglement strap with integrated snorkel holder loop
• Color: Snake Camu

3mm double-lined neoprene seat cover with water-repellent coating

Made from 3mm double-lined neoprene with an outer water-repellent nylon coating, this seat cover is specifically designed for spearfishing enthusiasts. It provides effective protection for car seats against water, sand, and dirt from wearing a wetsuit during transfers.

The neoprene material ensures excellent mechanical resistance and long-lasting durability, while remaining lightweight and practical. The water-repellent nylon coating also helps liquids slide off, preventing absorption and keeping the vehicle interior clean.

This seat cover allows quick transfers without the need to change, letting you wear your wetsuit directly in the car. The ideal solution for anyone who practices spearfishing and needs to keep the vehicle interior clean without sacrificing comfort and functionality.

C4 250 Foot Pocket for Freediving and Spearfishing

The 250 foot pockets are a major evolution of the 200 and 300 series by C4, designed specifically for freedivers and spearfishers who demand lightness, elasticity, and optimal comfort during the dive.

Technical Features

• Soft thermorubber upper with elastic properties, designed to ensure a comfortable fit even without socks.
• Rigid polypropylene insole co-molded internally, providing stiffness and stability in power transfer during the fin stroke.
• Minimized side rails, reducing weight and making it easier to attach the foot pocket to the blade, optimizing the system’s hydrodynamic efficiency.
• Single-screw fastening system that speeds up assembly and disassembly, ensuring quick, practical gear preparation.
• Total weight of only 246 grams, helping reduce fatigue in the water and improving finning fluidity.

Benefits

The combination of light weight, soft materials, and a rigid insole allows the 250 foot pockets to deliver an ideal balance between comfort and effective power transfer to the blades. The third-degree preformed anatomical structure securely wraps the foot, improving stability during underwater activity.

Specifications and Availability

• Available in 9 sizes: 36/37, 38/39, 39/40, 40/41, 41/42, 42/43, 43/44, 44/45, 46/47
• Color: White

C4 Speargun Bag in PVC Tarpaulin

The C4 speargun bag is made from PVC tarpaulin, a waterproof, tear-resistant material ideal for transporting freediving and spearfishing spearguns.

Design and Construction

The bag features a cylindrical shape with a reinforced bottom to ensure greater durability and protection during transport. The large side opening with a double-slider zipper allows spearguns to be inserted and removed easily and without hassle.

Comfort and Practicality

• Adjustable side straps for hand carrying
• Adjustable shoulder straps, allowing ergonomic handling while on the move

Technical Dimensions

• Length: 172 cm
• Width: 20 cm
• Depth: 20 cm

These specifications ensure compatibility with most freediving spearguns, providing protection and easy transport without compromising handling.

Foot Pocket 250 C4 for Freediving and Spearfishing

The 250 Foot Pocket by C4 represents the evolution of the 200 and 300 lines, designed to provide superior lightness and elasticity while optimizing comfort and thrust transmission during finning.

Technical Features

• Rigid insole in integrated co-molded polypropylene, for improved biomechanical support and greater efficiency in power transmission.
• Soft thermorubber upper, elastic, ensuring a comfortable fit even without fin socks, increasing freedom of movement and comfort under load.
• Rails reduced to a minimum, simplifying blade attachment and reducing the overall weight of the foot pocket for a more balanced trim in the water.
• Single-screw fastening system that speeds up assembly and disassembly, improving ease of use while freediving.
• Low weight of just 246 grams, a feature that contributes to greater agility during finning and reduced muscle fatigue.

Sizes and Color

• Available in 9 sizes: 36/37, 38/39, 39/40, 40/41, 41/42, 42/43, 43/44, 44/45, 46/47.
• Black color.

Benefits for Freediving and Spearfishing

The 250 C4 foot pocket combines lightness, elasticity, and a rigid insole to deliver an excellent balance of comfort and responsiveness. The reduced rails ensure better blade efficiency, allowing a smoother, less tiring kick, essential for freediving and spearfishing.

Ultrastretch C4 Undersuit for Freediving and Spearfishing

The Ultrastretch C4 Undersuit is made with smooth neoprene on the outside and stretch-lined neoprene on the inside, delivering an excellent combination of comfort and flexibility. The pre-shaped cut is designed to fit the body perfectly, with extra length in the pelvic area to optimize thermal retention during freediving sessions and spearfishing activities.

The longer design over the pelvis improves thermal protection under the wetsuit, making it especially useful during seasonal transitions or for those who prefer to avoid overly thick wetsuits. This undersuit is compatible with most wetsuits on the market, making it extremely versatile and practical for freediving or spearfishing.

Technical features

• Material: smooth neoprene on the outside, stretch-lined neoprene on the inside
• Thickness: 2 mm
• Pre-shaped cut with extended coverage in the pelvic area for greater thermal protection
• Suitable as an undersuit for all types of wetsuits

The stretch of the fabric ensures freedom of movement and unrestricted comfort during dives, while the reduced thickness provides lightness and quick donning. The Ultrastretch C4 undersuit helps keep body temperature stable, increasing the efficiency of your freediving and spearfishing sessions.

Ronin C4 – Belt Knife for Spearfishing

Ronin C4 is a belt knife designed with an ergonomic layout specifically for freediving and spearfishing, providing practicality and durability in the water.

Blade Features

• Made from AISI420B stainless steel for corrosion resistance and durability
• 81 mm blade length with razor grind and serrations for efficient line cutting
• Surface treatment with anti-corrosion PVD coating to increase service life in marine environments
• The blade extends the full length of the handle for high structural rigidity
• Integrated shaft extractors for managing speargun shafts

Handle and Sheath

• Handle co-molded with the knife body, made from recyclable POM acetal resin, known for its high mechanical strength and low water absorption
• Ergonomic, rigid Handle for optimal comfort and control during underwater use
• Equipped with a high-power safety whistle integrated into the base, useful for emergencies in the water
• Sheath made from the same POM material, with dual holes for secure belt attachment
• Sheath design with a partial opening that allows it to be repositioned on the belt without removing the weights

Technical Data

• Blade material: AISI420B stainless steel with PVD coating
• Blade length: 81 mm
• Total knife length: 180 mm
• Handle color: white
• Sheath color: black

Features and Benefits

The co-molded construction of the handle and body ensures high rigidity and mechanical strength, an essential factor for freediving and spearfishing activities. The specially shaped blade with razor grind and serrations makes line cutting efficient, while the shaft extractors make it easier to manage shafts without compromising safety or smooth operation.

The use of POM resin for the Handle and Sheath ensures light weight, moisture resistance, and ergonomics suited to precise control of the knife in the water. In addition, the integrated whistle provides a useful safety feature in underwater emergency situations.

Ronin C4 Spearfishing Knife

Ronin C4 is a knife specifically designed for spearfishing and underwater use, featuring an ergonomic and functional design to ensure comfort and precision in the water.

Technical Blade Features

• Made from AISI420B stainless steel, known for its corrosion resistance in marine environments
• 81 mm blade length
• Razor-sharp grind for a clean, precise cut
• Part of the blade features specific serrations for efficient line cutting
• Equipped with integrated shaft extractors to help remove shafts in recovery situations
• Partial anti-corrosion PVD treatment to increase durability in saltwater
• The blade extends the full length of the handle, ensuring optimal rigidity and mechanical strength

Handle and Sheath

The handle is made by co-molding it with the blade body using POM acetal resin, a recyclable material characterized by high rigidity, low moisture absorption, and low-friction properties, ideal for use in underwater environments.

A high-power whistle is integrated at the base of the handle for emergencies during freediving.

The sheath in POM features two double holes for secure belt attachment and has a partial opening that allows it to be moved without removing the weights, increasing ease of use during spearfishing.

Dimensional Specifications

• Total length: 180 mm
• Handle color: Red
• Sheath color: Black

Benefits for Spearfishing

• Rigidity and mechanical strength of the blade and co-molded body ensure stability during cutting
• Ergonomic POM handle improves comfort and safety while freediving
• Sheath with belt attachment optimized to avoid interfering with the weights, ensuring practicality during underwater operations
• Integrated emergency whistle, a useful safety tool for freediving

Ronin C4 – Knife for Spearfishing

Ronin C4 is a knife specifically developed for freediving and spearfishing, featuring an ergonomic and functional design.

Blade Features

The blade, 81 mm long, is made of AISI420B stainless steel, a material known for its corrosion resistance in marine environments. The blade extends through the full length of the handle, ensuring rigidity and stability during use. It is available with a razor grind for a clean cut and a serrated section specifically designed to make cutting lines easier. In addition, the line release notch allows speargun shafts to be freed quickly during spearfishing.

Handle and Sheath

The handle is co-molded with the knife body in POM acetal resin, a recyclable plastic material that offers high rigidity, mechanical strength, and low moisture absorption. Its ergonomic shape ensures a secure, practical grip during dives.

A high-power safety whistle is integrated into the base of the handle, useful for emergency signaling in the water.

The sheath, also made of black POM, features two double mounting holes for belt attachment. Its design includes a partial opening that allows the sheath to be repositioned on the belt without removing the weights, ensuring easy gear management during dives.

Technical Specifications

• Blade material: AISI420B stainless steel with anti-corrosion PVD treatment
• Blade length: 81 mm
• Overall length: 180 mm
• Handle and sheath: black POM acetal resin, co-molded
• Integrated accessories: high-power safety whistle
• Attachment system: sheath with double belt mounting holes, suitable for use while wearing weights

Top Volare Bag by C4

The Top Volare Bag by C4 is made from PVC Tarpaulin, a durable, waterproof, and tear-resistant material, ideal for protecting freediving and spearfishing gear.

This bag/backpack is designed to fit fins of any size currently available on the market, while also providing space for a wide range of underwater gear.

It can comfortably hold a wetsuit, gloves, booties, and other essential accessories for freediving sessions, ensuring practicality and easy transport.

Main Features

• Material: waterproof and tear-resistant PVC Tarpaulin
• Capacity: compatible with long fins and complete gear
• Use: ideal for carrying wetsuits, gloves, booties, and spearfishing accessories
• Design: large bag/backpack for efficient gear management

C4 Luxo Dive Light

The Luxo light by C4 is designed specifically for freediving and spearfishing, combining compact dimensions with high light output.

The housing is made from anodized aluminum, a material that ensures light weight, mechanical strength, and durability in underwater environments, making it easier to handle during dives.

The LED light source delivers a beam intensity of 20,000 lux, providing effective illumination in spearfishing situations where underwater visibility is critical.

Activation is via a magnetic slide switch, designed for simple, immediate use even when wearing freediving gloves, improving practicality in underwater conditions.

• Anodized aluminum body for strength and light weight
• 20,000-lux LED light beam
• Magnetic slide switch, easy to operate with gloves
• Compact size for easy transport and handling

C4 Marseille Belt for Freediving and Spearfishing

The Marseille Belt by C4 is an accessory specifically designed for the needs of freedivers and spearfishers, delivering an optimal combination of strength, elasticity, and durability.

Materials and Technical Features

• Stainless steel buckle with a “Marseille” quick-release mechanism, for easy and safe use underwater.
• Belt made from silicone, a material superior to traditional rubber in resistance to continuous exposure to salt water, UV rays, and temperature variations.
• High elasticity with elongation capability up to 570%, ensuring adaptability and comfort while diving.
• Silicone operating resistance tested from -70°C to +200°C, ensuring durability even under varying temperature conditions.

Dimensions and Color Options

• Length: 145 cm
• Height: 50 mm
• Thickness: 5.0 mm
• Available in 5 color options: black, white, brown, silver, and gold, to suit different aesthetic preferences while maintaining functionality and resistance.

Benefits for Freediving and Spearfishing

The choice of silicone over traditional rubber significantly improves the mechanical resistance and longevity of the belt in saltwater environments and under sun exposure, while its high elasticity supports a better fit and comfort while diving. The stainless steel buckle ensures a secure hold and a fast, safe release, essential for freediving and spearfishing.

C4 Marseille Belt for Freediving and Spearfishing

The Marseille Belt by C4 is designed specifically for freediving and spearfishing, delivering high-level technical performance and selected materials for the underwater environment.

Materials and Durability

The belt is made from high-quality silicone, a material that far exceeds the performance of the rubber traditionally used in freediving belts. Silicone offers:

• High elasticity for optimal stretch management, up to 570%
• Superior resistance to contact with salt water and UV rays
• High thermal tolerance, from -70°C to +200°C, to ensure integrity even in changing environmental conditions

Dimensions and Variants

• Length: 145 cm
• Height: 50 mm
• Thickness: 5.0 mm
• Available in 5 colors: Black, White, Brown, Silver, Gold

Stainless Steel Marseille Buckle

The quick-release buckle is made from stainless steel, a material chosen for its resistance to corrosion and salt, ensuring reliability and safety during dives.

Benefits for Underwater Use

The use of silicone and the Marseille buckle improves the belt’s functionality in the marine environment through:

• Greater durability and long-term reliability, even with continuous exposure to salt water
• Elasticity that promotes a comfortable fit without constriction and optimal adaptation to the freediver’s movements
• Resistance to weathering and UV rays, ensuring long-term integrity and efficiency

C4 Marseille Belt for Freediving and Spearfishing

The Marseille Belt by C4 is designed specifically for freediving and spearfishing, delivering high resistance, elasticity, and practicality in the water.

Made from highly durable silicone, this belt stands out for its superior resistance compared to traditional rubber materials, especially against the corrosive action of seawater and exposure to UV rays. Silicone also helps maintain optimal performance across a wide temperature range, from -70°C to +200°C.

Technical features

• Material: Silicone resistant to saltwater, UV rays, and temperature variations
• Buckle: Stainless steel with a Marseille-style quick-release mechanism for ease of use and safety
• Elasticity: Stretch capacity up to 570%, ensuring a snug and comfortable fit
• Dimensions: Length 145 cm, height 50 mm, thickness 5.0 mm
• Available colors: Black, White, Brown, Silver, Gold

The combination of materials and design makes this belt ideal for freediving and spearfishing, ensuring reliability, durability, and thermal comfort even during extended dives.

C4 Marseillaise Belt for Freediving and Spearfishing

The Marseillaise Belt by C4 has been specifically designed to meet the needs of freedivers and spearfishers, ensuring strength, elasticity, and long-lasting durability.

Materials and Durability

Made from high-quality silicone, the belt offers superior features compared to traditional rubber belts. Silicone provides excellent resistance to saltwater, UV rays, and temperature fluctuations, with an operating range from -70°C to +200°C. This ensures greater durability even during extended freediving sessions and continuous sun exposure.

Technical Features

• Stainless steel buckles with a quick-release “Marseillaise” mechanism, for simple and reliable fitting and removal
• High silicone elasticity, capable of withstanding elongation up to 570%, ensuring comfort and adaptability to the body
• Length: 145 cm
• Height: 50 mm
• Thickness: 5.0 mm

Variants and Customization

Available in 5 different colors: Black, White, Brown, Silver, and Gold, to make customization easier according to visibility needs and personal preferences during freediving sessions.

C4 Marseille Belt for Freediving and Spearfishing

The Marseille Belt by C4 has been specifically designed for the needs of freediving and spearfishing, ensuring strength, elasticity, and durability. Made from high-quality silicone, it stands out for its superior durability compared to traditional rubber belts.

The “Marseille”-style quick-release buckle is made from stainless steel, ensuring a secure and reliable fit during dives.

Technical Features

• Belt material: high-elasticity silicone with temperature resistance from -70°C to +200°C
• Elongation resistance: up to 570%
• Buckle: stainless steel Marseille-style quick-release buckle
• Dimensions: length 145 cm, height 50 mm, thickness 5.0 mm
• Superior resistance to the effects of seawater and UV rays compared to traditional rubber
• Available in 5 colors: Black, White, Brown, Silver, and Gold

The silicone used provides high elasticity and mechanical resistance, preserving its properties in saltwater environments and under intense UV exposure. This results in a reliable belt that maintains its integrity and functionality over time, even after numerous dives.

The belt structure and Marseille buckle allow for a precise fit, ensuring optimal weight distribution during freediving and spearfishing, contributing to comfort and freedom of movement in the water.

1 KG Segment for C4 Dyno Freediving Neck Weight

The 1 kg segment is designed specifically for the C4 Dyno neck weight, an essential component for freedivers who need customization and comfort when balancing weight during freediving activities.

The screw fastening system allows multiple segments to be assembled and combined, adapting the overall weight to the individual needs of the freediver. This modularity enables precise, functional adjustment, ensuring optimal balance during the dive.

A distinctive feature of this segment is its semi-mobile behavior once secured. This flexibility allows the segments to move in sync with the spine, preventing restriction and preserving natural freedom of movement during finning and gun tracking.

Main Features

• Material: made to ensure mechanical strength and long-lasting durability
• Fastening system: screw and axle included for secure, stable assembly
• Color: white, with a version also available in black
• Compatibility: exclusively for the C4 Dyno neck weight designed for freediving
• Semi-mobile design to follow the movements of the spine without restriction

This segment is an ideal technical solution for freediving and spearfishing, where the ability to fine-tune weight and maintain optimal ergonomics is essential for safety and efficiency during the dive.

C4 Bucket: Multipurpose Bag with Watertight Internal Lining

The C4 Bucket Bag is designed with a large internal volume and waterproof lining, ideal for use in freediving and spearfishing contexts. The internal watertight seal allows you to carry wet gear while keeping the contents protected and the surrounding material dry.

Thanks to its versatility, this bucket bag is suitable for holding:

• submerged or wet gear after sessions;
• water and soap solutions for wetsuit maintenance and donning;
• spearfishing accessories and components of various sizes.

The compact, lightweight design makes the Bucket easy to carry without bulk, ensuring practicality both on land and near the water. The watertight lining is a key feature for storing gear, preventing leaks and seepage.

Technical Features

• Capacity: roomy enough to hold different types of accessories and tools;
• Internal lining: waterproof material to maintain a watertight seal;
• Design: bucket-style structure that makes loading and unloading gear easier;
• Practicality: lightweight and compact, ideal for transport during freediving and spearfishing sessions.

1 Kg Segment for Dyno C4 Neck Weight

Single 1 kg segment specifically designed for the Dyno C4 neck weight, developed for use in freediving and spearfishing. This component allows the neck weight to be customized modularly, thanks to the screw fastening system.

Technical Features

• Material and construction: built to ensure strength and durability during the dive.
• Screw fastening system: allows the segments to be assembled and combined precisely, adapting them to the individual needs of the freediver.
• Semi-mobile movement: the secured segments follow the natural movements of the spine without limiting flexibility, improving comfort and freedom of movement in the water.
• Color: red for easy identification and weight management.

Included in the Package

• 1 kg segment
• Fixing pin
• Screw for securely locking the segment onto the Dyno C4 neck weight

1 Kg Segment for C4 Dyno Neck Weight – Freediving Gear

The 1 Kg segment is specifically designed for use with the C4 Dyno neck weight, an essential component in freediving and spearfishing gear. This segment lets you customize the neck weight in a modular way, ensuring precise adjustment to the freediver’s needs.

Technical features

• Weight: 1 kilogram
• Material: durable and suitable for underwater use
• Color: Black
• Attachment system: screw with axle included for secure, easy assembly
• Modularity: multiple segments can be combined and assembled to adjust the overall weight

Functionality and benefits

The screw attachment system ensures the segments are semi-mobile, allowing them to follow the natural movements of the spine without restricting freedom of movement. This feature improves comfort during the dive, maintaining balanced, stable trim in the water.

The system’s modularity allows the freediver to precisely customize weight distribution based on diving style and specific conditions, optimizing efficiency and underwater maneuverability.

Mimetic Back Weight with Fringes C4 by Marco Bardi

The C4 mimetic back weight with fringes, designed by Marco Bardi, is an adjustable Weight system ideal for spearfishing and freediving. Its load capacity ranges from 2 to 6 kg, allowing precise weight adjustment based on individual needs.

Made with elastic and adjustable materials, it ensures a comfortable and secure fit, promoting freedom of movement during dives. The mimetic design with fringes helps reduce visibility in the water, improving camouflage.

Main technical features

• Adjustable Weight from 2 to 6 kg
• Elastic material for excellent body adaptability
• Simple, practical adjustment for proper trim
• Mimetic design with fringes for improved underwater camouflage
• Comfortable donning and secure fastening during freediving sessions

Naifu Knife for Freediving and Spearfishing

The Naifu knife features an ergonomic design engineered to be comfortably secured to the calf or belt, ensuring practicality and quick extraction during freediving and spearfishing.

Blade technical features

The 94 mm blade is made from AISI420B stainless steel, vacuum hardened at 1020°C and nitrogen cooled at 20 atm, a process that ensures high rigidity and mechanical strength. The blade incorporates a line cutter and extends internally along the full length of the handle, increasing stability and precision in use.

Handle and sheath

The handle and sheath are molded from POM acetal resin, a recyclable plastic material known for its high rigidity, low moisture absorption, and low-friction properties, essential for ensuring comfort, durability, and easy extraction in the underwater environment.

The sheath locking system features a central retention tooth that provides secure locking while remaining easy to release, allowing the knife to be quickly drawn even while wearing dive gear.

Dimensions and attachment

• Blade length: 94 mm
• Total knife length: 204 mm
• Handle and sheath color: black

The knife is supplied with two rubber straps equipped with stainless steel loops for secure attachment to the leg or arm. On the back of the sheath there is a hole for the optional addition of an elastic band, increasing anchoring versatility according to the preferences of the freediver or spearfisher.

Neoprene Zero C4 Socks for Freediving and Spearfishing

The Neoprene Zero socks by C4 are designed with precise attention to the anatomical differences between the right and left foot, ensuring an ergonomic and comfortable fit during dives and spearfishing activities.

Materials and Construction

Made with three specific materials, these socks combine targeted technical features for each area of the foot:

• Instep area in elastic material to ensure comfort and freedom of movement
• Tip made from warm, cut-resistant material to effectively protect the toes
• Sole and heel with non-slip reinforcements that improve grip and mechanical resistance on slippery surfaces

Technical Specifications

• Neoprene thickness: 5.0 mm, balanced to maintain warmth and flexibility
• Available size: XL

These socks are ideal for freediving and spearfishing, offering high protection and functionality in the water.

Plasma C4 Mask for Freediving and Spearfishing

The Plasma mask by C4 was designed to meet the needs of freedivers and spearfishers looking for a technical, compact, and comfortable mask with a wide field of view.

Technical Features

• Optimized geometry: the lenses are positioned very close to the eyes to minimize internal volume and maximize the field of view.
• Soft silicone Skirt: with variable thicknesses and an internal matte finish to eliminate unwanted reflections and glare on the lens.
• Adjustable ergonomic Strap: made of silicone to ensure a secure and comfortable fit while spearfishing.
• Ultra-resistant tempered Lenses: ensure safety and long-lasting durability even on deep dives.

Finishes and Variants

The Plasma mask is available in 5 specific colors:

• Black
• White
• Camu
• Silver
• Ocean

Suitable for Deep Dives and Freediving

The extremely low internal volume and lens geometry provide a wide field of view and improved perception during freediving and deep spearfishing. The proximity of the lenses to the eyes makes clear, panoramic visibility easier, a key factor for efficiency and safety in the water.

Neoprene Zero Dry C4 Gloves

The Neoprene Zero Dry gloves are designed and manufactured by C4 with particular attention to the thermal and protective requirements specific to freediving and spearfishing. Their construction provides thermal insulation and protection during dives in underwater environments.

Technical Features

• Acqualock System: ensures a watertight seal by preventing water from entering, helping maintain a constant internal temperature and improving thermal comfort.
• Ergonomics and comfort: a design engineered to fit the hand perfectly, ensuring freedom of movement and a natural grip during spearfishing.
• Specific Reinforcements: palm protected with anti-abrasion material to guard against wear caused by rough surfaces or underwater gear.
• Additional reinforcement on the fingertips of the first three fingers of the left glove, which are especially stressed when gripping and handling objects underwater.
• Available thicknesses: 2.0 mm, 3.0 mm and 5.0 mm to suit different thermal conditions and types of diving.
• Available Sizes: XS, S, M, M/L, L, XL for an optimal, personalized fit.

Applications

These gloves are recommended for freedivers and spearfishers who need effective thermal protection combined with superior mechanical resistance and ergonomics designed to ensure precision and comfort during spearfishing.

C4 Meltemi Snorkel for Freediving and Spearfishing

Meltemi by C4 is a snorkel designed specifically for freediving and spearfishing, with standard dimensions and optimized shapes to improve airflow while breathing in the water.

Materials and Structure

The snorkel tube is made from floating thermoplastic materials, combining two distinct hardness levels to provide the ideal balance between rigidity and flexibility. The central section of the tube, slightly flattened to optimize hydrodynamics, is made from a semi-rigid material, while the upper section is made from a softer material that enhances practicality and comfort of use in the water.

The mouthpiece is molded from hypoallergenic silicone, ensuring comfort and durability even during extended use. All the materials used are soft, floating, and feature high elastic recovery, ensuring durability and shape retention over time.

Technical Features

• Ergonomic mouthpiece design for optimal anatomical fit
• Central semi-rigid tube to preserve shape and improve breathing flow
• Floating thermoplastic materials to prevent water intrusion and make surface handling easier
• High elasticity and comfort provided by the hypoallergenic silicone mouthpiece

Color Variants

Available in four finishes:

• Black
• Carbon Look
• Camo Med
• Camo Ocean

C4 floating Marker Weight for freediving and spearfishing

The C4 floating Marker Weight is a buoy designed for precise marking of spots on the seabed, ideal even in low-visibility conditions during freediving and spearfishing activities.

Made with a sturdy steel plate that acts as an anchoring weight, the Marker Weight releases easily from the belt and can be positioned at the desired spot on the seabed. This ensures stable, secure positioning during the dive.

The float is equipped with 50 meters of durable Line, which runs vertically up to the surface, ensuring a clearly defined and visible marking line.

Main technical features

• High-strength steel plate for anchoring on the seabed
• Floating Spool with Line attachment system
• 50-meter Line, thin yet strong, designed to maintain position even in sea current
• Cleat integrated into the floating section to securely fasten the Line

The design of the C4 Marker Weight ensures perfect Line management with secure fastening, minimizing movement caused by current and making it easier to locate the dive spot.

C4 Meltemi Snorkel for Freediving and Spearfishing

The Meltemi by C4 is a standard-size snorkel designed specifically for the needs of freediving and spearfishing. Its shape is engineered to optimize airflow, ensuring efficient breathing during underwater activity.

Materials and Construction

The tube is made from floating thermoplastic materials and features two different hardness levels to easily adapt to the comfort and ergonomics required by spearfishers. The central section, slightly flattened, is made from semi-rigid thermoplastic material, while the upper section is made from a soft material that improves flexibility and comfort in the water.

The mouthpiece is molded in hypoallergenic silicone, ensuring excellent seal and comfort even during extended use.

All materials used are soft, floating, and feature high elastic recovery, ensuring durability and ease of use without compromising the snorkel’s overall lightness.

Available Colors

• Black
• Carbon Look
• Camo Med
• Camo Ocean