The newly designed C370 second stage regulator. Balanced and light weight. Scubapro C370 Second Stage Features: Air Balanced valve makes breathing at a vary depths and pressures smooth with little effort Fiberglass and reinforced nylon casing creates a rugged tough exterior Stainless steel frame on the front cover with the Scubapro C-Series signature. A new exhaust tee based on the S620 it's design contributes to better work of breathing (10% improvement over the C350). User controls include a diver-adjustable inhalation effort knob and coaxial Venturi-Initiated Vacuum Assist (VIVA). Large purge button is easy to activate, even wearing thick gloves. Super-flow hose features an oversized bore that allows more air to flow on each inhalation. Compact Hi-Flow mouthpiece improves airflow as well as mouth comfort, fitting all mouth sizes, from smaller to largest. Weight: 171g. Airflow at 200bar: 1600l/min