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starting from 560.00 504.00

Starting well to do better

ONE is a buoyancy compensator that represents the perfect balance between quality, performance and price. ONE has been designed as a recreational BCD but some of its versions are perfect to face also more challenging immersions.

  • COLOURRequired


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    • 70 €
    • 100 €


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    • 100 €
    • 100 €

    TANK BANDSRequired

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    • 10 €
    • 10 €


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    POCKETS (pair)Required

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    • 20 €
    • 40 €


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    • 8 €
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A Buoyancy Compensator completely modular

This buoyancy compensator is provided with an AUDAXPRO Technical Modular System (T.M.S.), which allows changing the BCD standard configuration according to your needs. Thanks to the Audaxpro T.M.S. you can shape, configure and integrate your buoyancy compensator as you like. You can, for example:

Adapt your jacket to your physical shape

Adapt it according to the type of immersion

Change its components with any other Audaxpro BCD ones

Upgrade your equipment with a wide series of accessories

Buoyancy Compensator with a comfortable and practical harness

ONE is a buoyancy compensator suitable for divers who practise recreational diving but also want to start and try more challenging immersions. With this purpose the ONE BCD has been created with a very comfortable, well-accessorized and easily adjustable harness (in water as well).

More info

The preformed harness of this great scuba buoyancy compensator is entirely made of cordura 1000 and padded with 2,5-mm pre-compressed expanded polystyrene. It is possible to adjust its height with the 2 stainless steel back buckles placed on its anatomical shoulder straps. The harness and the anatomical shoulder straps are blocked and adjustable through 2 stainless steel back buckles and fixed with Velcro. You can fasten and unfasten the jacket shoulder straps through 2 50-mm nylon fasteners. There are two 50-mm stainless steel D-rings, which are sewn, thus the shoulder straps cannot be adjusted. Moreover, the 2 anatomical shoulder straps have 2 stainless steel little rings each, which help adjusting the breast line. In the part adjacent to the bladder, you can find a HT polyester strip vertically placed at the harness centre, where there are also 3 stainless steel grommets (2 in the higher part and 1 in the lower part). Right and left to the central strip there are 2 other strips divided by steams. These ones are meant to pass through the 4 bladder cuts and through the harness slots fixing the tank. On the big strips of the diving BC, there are 2 non-slip rubber grips for the tank. If needed, you can replace the ventral belt placing 2 rectangular 50-mm nylon rings, which are in the lower part of the harness, at the ventral part level. There are 4 stainless steel D-rings, 2 22-mm and 2 50-mm D-rings to fix the accessories. The harness is equipped with a HT polyester handle to carry the jacket inside water or on board. To make your diving experience more comfortable, this scuba BCD has an anatomical padding with an inner pocket to keep the lift bag or the signal tube. The padding is fixed to the harness with 4 stainless steel screws. A rectangular 50-mm nylon ring, placed centrally in the lower part of the harness, is used to fix  the inguinal belt, which can be adjusted through a 50-mm nylon back buckle. A stainless steel back buckle allows closing the ventral belt. 

A different version for every different need

Audaxpro buoyancy compensators have been designed to ensure the best performances in every kind of diving immersion. For this reason, ONE is available in different versions, one for every different need. This is only possible because the BCD Audaxpro are built by combining high technology and skilled Italian craftsmanship.

Choose your favorite color for your Buoyancy Compensator

The buoyancy compensator ONE is available in 8 different colors. You can choose between black, white, blue, red, yellow, orange, fuchsia and camouflage

Choose your bcd with the suitable buoyancy force

ONE is a buoyancy compensator with a variable structure, is available with 3 different buoyancy thrusts, so that you can choose the most suitable one for your immersions. You can opt for a 15-liter version to practise recreational diving or for 20 or 27 litre to face challenging immersions. In both cases, the BCD ONE has 2 overpressure valves, but there are some little differences among the different mode

More info

The outer bladder of this scuba BCD is made of cordura 1000, while the inner bladder is made of TEXTANE A/B 210 nylon. You can replace the buoyancy compensator inner bladder thanks to a zip placed in its higher part. Anyway, there are some little differences between the 15-liter version and the 20 and 27-liter versions.

In the ONE 15 liter , there is no central part made of textile but there are 4 50-mm nylon rectangular rings (2 for each side) to fix the bladder to the harness. There are 2 big back strips to fix both the bladder and the tank. There are 4 other 50-mm nylon rectangular rings (2 per side) at the ventral part level, to fix the bladder to the harness also through the ventral belt. Moreover, a stainless steel screw passing through the bladder and the harness grommets (placed in their higher part) fixes both (harness and bladder). The big strips on the bladder sides have 6 loops (3 for each side) to pass and tighten the 6 latex rings (3×8) for adjusting and filling the air bladder.

In the ONE 20 and 27-liter, there is a polyester protection for the inner bladder and the zip can be concealed. In the central part of the bladder there are 4 cuts. They are used to remove the plates and lighten the jacket. In the bladder central part there is also a HT polyester strip, which is vertically placed right there, where 3 stainless steel grommets are (1 in the higher and 1 in the lower part).   To tighten the 12 latex rings (3×8), there are 12 stainless steel grommets and 2 side big strips. The big strips on the bladder sides have 4 slots and 8 loops (4 per side).


Buoyancy thrusts: 15, 20 or 27 lt

Tank maximum capacity 15 lt: 15 mono-tank

Tank maximum capacity 20 lt: 15 mono-tank or 12+12 bi-tank

Tank maximum capacity 27 lt: 18 mono-tank or 15+15 bi-tank

Overpressure and rapid-discharge valves: 2

Balance the Buoyancy Compensator weight according to your equipment

Thanks to the Audaxpro technical modular system, you can set the weight of your scuba buoyancy compensator according to the different equipment you may choose for every immersion. ONE 20 and 27 liters can be bought or used with plates (Plate versions) as well as without them (Soft version). In the Plate version, you can opt for a stainless steel plate and back plate to increase the jacket weight, or for a plate and back plate made of anodized aluminium to diminish it. ONE 15 liters, on the contrary, can only be bought and used in its soft version. There is an anatomical back plate padding for this jacket, which ensures you the best diving comfort. The back plate padding has an inner pocket to keep the lift bag or the signal tube.

More info

This special scuba buoyancy compensator can be assembled either with a stainless steel plate (kg. 2,160) and back plate (gr. 690) or with an aluminium plate (gr. 730) and back plate (gr. 230). In the back plate, 2 big back strips are assembled to fix the scuba BCD tank. You can choose between 2 different types of big strips for this diving BC, one for mono (110 cm) and one for bi-tank (150 cm). On the strips there are 2 non-slip rubber grips.  

Plate Steel

Stainless Steel

Plate 2,160 Kg
Back Plate 690 gr

Plate Alu

Anodized Aluminium

Plate 730 gr
Back Plate 230 gr


Without Plates

Maximum lightness

Use the inflator in complete comfort

ONE is a scuba buoyancy compensator designed to make every operation in water easier, so that you only have to concentrate on your immersion and enjoy it. For the same reason, the inflator and the inflator holder have been assembled in an easy way, in order to make the BCD lighter. The inflator of this diving buoyancy compensator is 50-mm long and it has a discharge valve and metal anti-fraying wire. Both have a piston control, a nickel-plated brass inner mechanism and derlin non-slip buttons.

Valve with metal
twin wire without fraying

Choose the perfect pocket for your Buoyancy Compensator

With Audaxpro, you have the opportunity to choose among many pockets models for holding ballast or containing other objects. Choose the one that better matches your ONE.

More info

The pockets of this special diving buoyancy compensator made of cordura 1000 are horizontal (6,5x20x14) and have a weight capacity of 5 kg. Every pocket of this scuba BC has one zip opening in its higher part. You can use it as a ballast holder or as an objects container. A stainless steel screw ensures that the pocket is tightened to the buoyancy compensator harness, passing through a stainless steel grommet placed on the pocket back. It is also possible to assemble other models (optional) on your jacket choosing one among the whole Audaxpro pocket collection with an additional charge.

Sign your Buoyancy Compensator

Not only can you customize your buoyancy compensator technically, but you can also personalize your BCD with the writing you prefer! Audaxpro offers you the chance to embroider your buoyancy compensator inflator holder.

More info

For example, you can write your name, nickname, acronym, your diver certification number, the didactics, your blood type or any other signs…

Immersion Type

  • Recreational
  • Technical/Recreational

BCD Style

  • Latex rings
  • Travel BCD

T.M.S. (Technical Modular System)

  • Adjustable BCD according to the type of immersion
  • Adjustable harness according to your physical shape
  • Compatible components with those of any other Audaxpro jacket
  • Possibility of equipment upgrading with extra accessories

Available Versions

  • ONE:
    – Outer bladder made of Cordura
    – 8 colours (black, red, yellow, blue, white, orange, fuchsia and camouflage)
    – black harness

Buoyancy Thrusts

    – 15 lt
    – 20 lt
    – 27 lt

Tank Maximum Capacity


  • Adjustable also in water
  • Pre-formed harness of cordura and 2,5-mm pre-compressed expanded polystyrene
  • Adjustable ventral belt
  • Replaceable ventral belt, if needed
  • Stainless steel ventral belt buckle
  • Adjustable anatomical shoulder straps
  • Adjustable inguinal belt
  • Adjustable breast line
  • Fixing supports for accessories
  • HT polyester handle for transport
  • 12 stainless steel D-rings
  • 7 stainless steel fixing screws
  • 42 stainless steel grommets
  • Plate padding made of cordura 1000 with inner pocket (to keep the lift bag or the signal tube)
  • 2 big back strips to hold the tank with rubber grip, two options
    – mono (110 cm)
    – bi-tank (150 cm)

Air Bladder

  • Horseshoe shaped
  • 2 overpressure and rapid-discharge valves
  • Outer bladder made of cordura 1000
  • Inner bladder made of Textane A/B 210
  • Replaceable inner bladder, if necessary
  • ONE 15 lt:
    – 8 50-mm stainless steel rectangular rings to fix the bladder
    – stainless steel screw to fix the bladder
    – 6 slots to tighten latex bands
    – 6 latex bands for adjusting and filling the bladder
  • ONE 20 and 27 lt:
    -12 latex rings 3×8 for adjusting and filling the bladder
    – 12 stainless steel grommets to pass and tighten the latex rings
    – HT polyester strip with 3 stainless steel grommet


  • Inflator with discharge valve and metal anti-fraying wire
  • 50-cm long
  • Piston control
  • Nickel-plated brass inner mechanism
  • Non-slip inflation and deflation buttons of derlin
  • Cordura inflator holder


  • 2 pockets to hold the ballast or contain objects
  • Optional choice among:
    – horizontal 1 zip, 5 kg, 6,5x22x14 cm (standard equipment)
    –  vertical 1 zip, 5 kg, 6,5 x 14 x 22 cm (optional)
    – vertical double zip, 5 kg, 6,5x14x20 cm (optional)
    – horizontal triple zip, 5 kg, 12 x 22 x 16 cm (optional)
    – vertical triple zip, 5 kg, 12 x 16 x 22 cm (optional)
    – slide, 4 kg, 6 x 22 x 13 cm (optional)


  • ONE 15 lt is available only in the SOFT version
  • ONE 20 and 27 are available in the following versions:
    – PLATE (jacket is sold with plates)
    – SOFT (jacket is sold without plates)
  • In the Plate version, you can choose among
    – stainless steel plate (2,160 kg) and stainless steel back plate (690 gr)
    – anodized aluminium plate (730 gr) and anodized aluminium back plate (230 gr)


  • ONE SOFT (model without plates):
    -15 lt – 3,2 kg
    -20 lt – 3,8 kg
    -27 lt – 4,1 kg
  • ONE PLATE STEEL (model with stainless steel plates):
    – 20 lt – 6,8 kg
    – 27 lt – 7,1 kg
  • ONE PLATE ALU (model with aluminium plates):
    – 20 lt – 4,8 kg
    – 27 lt – 5,1 kg


  • Size A (M-L-XL)
  • Size B (M-S-XS)
  • Tailored

Standard Equipment

  • Nylon 210 bag for transport
  • Instruction manual


  • It is possibly to personalize the inflator holder with the writing you prefer.


  • 2 years

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