High performance over-balanced first stage provides progressively greater intermediate pressure as depth and gas density increases for superior gas delivery under the most extreme conditions. Fixed hose routing ideal for both backmount and sidemount configuration Environmental sealing prevents internal corrosion, contaminants, and icing of the first stage Designed to withstand the rigorous CE standard for coldwater performance Nitrox compatible to 40% 2 High Pressure and 4 Low Pressure ports DIN/300 bar