62X First Stage The 62X first stage is record breaking as the smallest first stage in the diving market: it measures 63 mm and weighs only 464 g (DIN). This small but powerful membrane first stage is 10% smaller and lighter than its 52X predecessor and has 30% less volume. Equipped with Auto Sealing (AST) technology that provides protection against water entering the first stage. The core of the 62X has been redesigned to generate an even better seal, making it an excellent regulator for diving in cold water. The addition of the optional Twin Balanced Piston (TBP) makes this one of the best performing regulators in cold water. The finish is chromed with a pearl-effect surface. Technical innovations specific to the inner workings of this first stage include a new valve stem seat that is now sharper with a smaller cone radius and reduced angle to better define the sealing surface. Dual Adj Second Stage The Dual Adj second stage is made of ultra-lightweight technopolymer and offers smooth