This is the ScubaPro A700 Second Stage Scuba Diving Regulator
High performance regulator
Full-metal body and components for best thermal exchange
Lightweight 2nd stage to prevent jaw fatigue and add to overall comfort
Air-balanced valve technology decreases inhalation resistance for ultra-smooth breathing
"Diver Adjustable" venturi to prevent unwanted free-flow
Nitrox compatible to 40% (the recreational limits of nitrox)
Super high-flow exhaust valve allows air to exit more freely and lowers exhalation effort and keeps bubbles away from face and eyes
Titanium Nitride PVD coating dramatically increases resistance to corrosion and scratches
High comfort orthodontic mouthpiece
30 inch hose included
Cold water divers or those frequenting harsh environments will appreciate this perfectly matched pair. The A700 is a complete complement to the MK17, a high performing balanced diaphragm first stage engineered exactly for such conditions.
Balanced technology provides consistent performance at all tank pressures, at any depth and optimizes the second stage performance.
Dry ambient pressure chamber provides better protection and performance in cold water, prevents water entry, enhancing trouble-free operation.
Balanced diaphragm design, with ultra-fast flow to the second stage to obtain the lowest possible work of breathing at depth.