The ultra-compact MK21/C370 regulator system delivers the ideal blend of comfort and
performance. About 20% smaller than SCUBAPRO’s flagship MK25 but benefitting from the
same core technology, the MK21 features a modern, cutting-edge design whose size and
weight make it an excellent choice for travel divers. 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.
Together they create a no-nonsense air delivery system that delivers big performance in a