This regulator system combines SCUBAPRO’s premium diaphragm first stage with
its newest air-balanced second stage. The MK17 EVO is completely sealed off from
the elements, ensuring trouble-free operation no matter how cold or murky the water
gets. Its improved internal design allows more airflow from the LP ports which have
been reconfigured for better hose routing. The C370 brings forth the best features of
its predecessor, the C350, while adding a balanced valve to its design. Its exhaust tee,
based on the S620 Ti’s design, contributes to a 10% improvement in work of breathing
over the C350. It’s a smart reg system for all kinds of diving applications.