The compact, lightweight MK19 EVO, with its environmentally sealed system, dry ambient pressure chamber and user-friendly LP port swivel turret, is the ideal first stage for cold water and harsh diving conditions. The smooth-breathing S620 Ti, embracing the best features of SCUBAPRO’s renowned S600 in an upgraded design that delivers 37% lower work of breathing, is a proven performer when it comes to providing effortless airflow. Put them together and you have a versatile regulator system that can be counted on to deliver top-line performance in all dive conditions.