Check the listing for details. Mares Dual ADJ 2nd Stage Regulator w/out Hose. Condition: New. Listed at 175.00 USD. Dual Adj Second Stage The Dual Adj second stage is made of ultra-lightweight technopolymer and offers smooth and easy breathing at all depths. It features a pneumatic assisted design(P.A.D.) and exclusive Mares patented Vortex Assisted Design (VAD) systems. The newly developed adjustable breathing knob helps divers experience a customised breathing experience even when wearing thick gloves.TECHNOLOGYAbrasion resistant and affordable, ideal for diving in warm and moderate water temperatures. Extreme light weight and exceptional softness guarantee the maximum freedom of movement. The air bypass tube delivers air to the mouthpiece creating a swirling vortex with a low pressure area in the center that keeps the diaphragm down during inhalation, for very sensitive and easy breathing at all depths.