The 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-dive lever. This lightweight regulator delivers effortless airflow and offers full user controls.

The air-balanced valve of the C370 ensures smooth inhalation effort at varying depths and supply pressures. Its compact and rugged fiberglass-reinforced nylon casing takes up minimal space in a dive bag. The stainless steel frame on the front cover adds the Scubapro C-Series signature. Despite its new features, the C370 maintains the same overall size as the C350. The large purge button is easy to activate, even when wearing thick gloves. The super-flow hose with an oversized bore allows for increased air flow with each inhalation. The compact Hi-Flow mouthpiece improves airflow and mouth comfort for all mouth sizes. Weighing only 6 oz (171g), this second stage regulator is lightweight and efficient.