LAUDIVE-Aqua Lung Legend LUX Supreme Regulator

First Stage:Auto-Closure Device (ACD) keeps corrosive water out of the fisrt stage inlet by automatically closing as the Legend is removed from the cylinder valve. Unique over-balanced, diaphragm design results in superior performance at depth. 2 HP ports and 4 MP ports are angled for optimum hose routing. An enviromental dry system keeps water out of the main spring chamber thus preventing ice buildup and keeping silt and contamination out. Available in your choice of yoke or DIN connectors. Compatible with up to 40% O2 right out of the box. Second Stage:Pneumatically-balanced second stage results in smooth, easy breathing. The Comfo-bite mouthpiece virtually eliminates jaw-fatigue. A heat exchanger (patented) which surrounds the valve mechanism, dissipates the cold caused by gas expansion while drawing in the warmth of the ambient water. The ergonomic exhaust tee channels the exhaust bubbles out of your field of vision.  The design also contributes to a reduction in exhalation effort. Attached to a 29" braided Aqua Flex hose.  These hoses are lightweight and extremely pliable which eliminates any tugging on the mouthpiece. Supreme Version (for water colder than 50°F / 10°C).In addition to the first stage environmental dry system and the second stage heat exchanger, which are found on all models and provide excellent freezing resistance, the Supreme Versions are:Specially adjusted to resist freezing. Equipped with a lip shield on the second stage to keep lips warm