Description
When performance is your highest priority, the Aqua Lung Leg3nd Regulator Set is the answer. Sharing the same breathing characteristics with the Leg3nd Elite and Leg3nd MBS, the Leg3nd is an over-balanced regulator which offers exceptional cold water performance.
The familiar venturi switch now features an updated and ergonomic design on both the 2nd stage and Octopus, overmolded with “soft touch” elastomer, the control switch perfectly controls the venturi effect, either allowing or containing a natural freeflow.
Complete set includes:
- 1 x Aqualung Leg3nd DIN first stage
- 1 x Aqualung Leg3nd second stage with Aqua Flex hose
- 1 x Aqualung Leg3nd Octopus with yellow Aqua Flex hose
Aqua Lung Leg3nd Second Stage
The familiar venturi switch now features an updated and ergonomic design for ease of use.
Lightweight second stage – just 227g – has a new front cover opening channels allowing water to flow sideways over the diaphragm. Radial openings prevent freeflows when diving in stronger currents. Openings widened to reduce peak inspiratory flow by an impressive 20%.
New overmolded exhaust cover made of elastomer with a “soft touch” effect. Overmolded air purge surface area makes regulator purging easier. Purge depth controller optimizes air flow with minimal effort.
Patented Comfobite mouthpiece reduces jaw fatigue and secures the second stage more comfortably. Detachable and reusable mouthpiece clamp allows a quick and simple tool-free mouthpiece change without plastic waste.
The enlarged heat exchanger helps to prevent freezing of the second stage mechanism.
Air channel deflector directs the air flow evenly during the inhalation phase. Streamlined bi-material deflector lowers the exhalation effort.

Aqua Lung Leg3nd First Stage
When the first stage is not connected to a cylinder valve, the Auto Closure Device (ACD) keeps the inlet shut to protect the first stage internal parts from contamination and corrosive water. This preserves the internal lubrication, keeps the inlet filter clean and dry and is safer for elevated percentages of oxygen.
Where there’s no moisture, there’s no ice! Exceptional cold-water performance is achieved by modernizing Aqua Lung’s three anti-freeze properties. The Leg3nd’s integrated dry chamber keeps inner components clean and dry by isolating them from the outside environment. Deep ribs create a large heat exchange surface area that helps to prevent ice forming on the mechanism (+30% vs Glacia / +70% vs Legend 2). The new overmolded cap delays ice forming over the external diaphragm.
Auto-Balanced (also known as Over-Balanced) diaphragm for superior performance.
Progressive increase of the working pressure to maintain optimum breathing efforts. Depending on the diver’s depth, the working pressure of the first stage is automatically elevated to counteract the increased breathing air density.
Ergonomically shaped DIN and YOKE screws made of a bi-material “Soft Grip” surface provide a better hold when installing or removing the first stage – especially with cold hands. Channeled YOKE screw to prevent water retention. Specialised ACD Dust cap attached to the regulator body to protect the inlet fitting and the ACD system from impacts or damage.
Perfectly positioned HP (x2) and MP (x4) ports provide optimal hose routing.

Aqua Lung Leg3nd Octopus
When performance is your highest priority for your alternate air source, the Aqua Lung Leg3nd Octopus is the answer.
The Leg3nd Octopus shares the same breathing characteristics with the Leg3nd Elite and Leg3nd MBS regulators. The familiar Venturi switch now features an updated and ergonomic design for ease of use.
Because your sensations and emotions are amplified in the underwater world, you can focus on what matters: feeling free.

New front cover opening channels allow water to flow sideways over the diaphragm. Radial openings to prevent freeflows when diving in stronger currents. Openings widened to reduce peak inspiratory flow by an impressive 20%
New overmolded exhaust cover made of elastomer with a “soft touch” effect.
Overmolded air purge surface area makes regulator purging easier. Purge depth controller optimizes air flow with minimal effort.
Patented Comfobite mouthpiece reduces jaw fatigue and secures the second stage more comfortably. Detachable and reusable mouthpiece clamp allows a quick and simple tool-free mouthpiece change.
The enlarged heat exchanger helps to prevent freezing of the second stage mechanism
Air channel deflector directs the air flow evenly during the inhalation phase. Streamlined bi-material deflector lowers the exhalation effort.