SCUBAPRO teams its high performance first stage with the air-balanced S620Ti second stage. The MK25 EVO offers excellent resistance to freezing, superb inhalation sensitivity and instant delivery of air on demand. The S620Ti embraces the best features of SCUBAPRO’s renowned S600 in an upgraded, state-of-the-art design. Smaller and lighter than the S600 but using the same-sized diaphragm, the S620Ti delivers excellent performance; work of breathing has been reduced by 37% over the S600, providing effortless airflow under all dive conditions. The full titanium inlet tube is ultra-light, the large purge cover improves water circulation, and the exhaust tee increases performance while directing bubbles out of the field of view. In all water temperatures, in all dive conditions, this reg system is a winner.