Used Scubapro C370 Regulator - 2nd Stage OnlyThe C370 is a new and improved version of the compact C350 case. It features a balanced valve and a brand new exhaust tee based on the S620 Ti's design. With a 10% improvement in work of breathing, the C370 offers better performance. The addition of a compact hi flow mouthpiece borrowed from the S620 Ti enhances airflow and mouth comfort. The C370 is fully adjustable, with a user adjustable inhalation effort control knob and a small coaxial dive pre