MK17/C370 + R095 OCTO:SCUBAPRO’s premium diaphragm first stage paired with the air-balanced C370 second stage delivers reliable and consistent airflow. Ease of use and dependability make it a smart reg system for all kinds of diving applications. This superb-value package offers top-of-the-range performance and flow rate ensuring safer diving even at deeper depths. Diver adjustments on the balanced C370 Second Stage allow for personalisation in setting up the breathing characteristics to your needs, with an improvement in overall Work of Breathing over its predecessor.