Aqua Lung Pro Helix Octopus Regulator

The Helix Pro octopus provides the same great performance as the Helix Pro primary second stage. What’s in the box Helix Pro Octopus Second Stage Long Yellow Hose User Guide Specs Type of second stage    Pneumatically balanced Controls    Venturi switch Breathing resistance    Preset Mouthpieces    2ea. – A Comfo-Bite, installed, and a standard with bite wings in the box Lip shield    Yes Heat Exchanger for freezing resistance    Standard on all models 2nd Stage Weight    175 g 2nd Stage Weight     Supreme model178 g Hose length    730 mm Overall work of breathing (WOB) scores    Avg. 0.80 joules/liter Nitrox compatible    Yes, to 40% O2 when new, out of the box Features Pneumatically-balanced resulting in smooth and easy breathing Heat exchanger (patented) which surrounds the valve mechanism, dissipates the cold caused by gas expansion while drawing in the warmth of the ambient water Easy-to-grip venturi lever prevents unwanted freeflow at the surface while giving a performance