Satin plated brass body with heat exchanging ribs for maximum thermal performance. Break through, innovative over-moulded first-stage endcap and environmental diaphragm helps prevent ice build-up that can cause first stage free flow in extreme circumstances. Also protects the first stage from impact damage. Ribbed diaphragm clamp for improved heat exchange in cold water conditions. Unique over-balanced diaphragm design – as the diver descends, the over-balancing feature allows the medium pressure gas in the hose to increase at a faster rate than ambient. This results in superior performance at depth. 5 x medium pressure ports, 4 mounted on a rotating turret for improved hose orientation. 2 x angled high pressure ports for optimal hose routing and fitting of transmitters. Double swivel hose for greater freedom of movement and comfort. Easy to grip DIN hand-wheel or over-moulded yoke hand-wheel, only requires one hand to release. DIN, Yoke and M26 Thread available, 300bar, 232bar and M26 300bar (O2) respectively. Tested for Octopus use - EN250A to 60 metres cold water. Nitrox/Oxygen compatible – Up to 40% O2 outside the EU (European Union), within the EU anything above 21% O2 must use an M26 Connection.