Our 3100 regulator is a high performance, workhorse designed for the rigors of advanced diving.This regulator can take a beating and keeps on ticking. It can even be serviced easily in the field. Earning CE approval to EN 250, the 3100 has earned the distinction of having superb breathing, while withstanding the hardships and abuse of working divers. Pneumatically balanced design delivers gas at a constant pressure so work of breathing remains effortless independent of depth or tank pressure. Diaphragm first stage eliminates the number of moving parts and keeps internal parts free of outside contaminates and debris. Ergonomic, venturi lever is easy to adjust even with thick gloves or cold-water mitts. The 3100 has an optional cold-water environmental kit that also protects the regulator from build up of salt, sand, or other contaminants. It comes standard with a 300-bar DIN connector and an additional yoke adapter. It features oxygen compatible o-rings and lubricants and is Nitrox-ready. CE EN250 approved.