Developed from the popular MK17, the MK19high performance, and versatile overbalanced diaphragm first stage with dry ambient chamber and boat swivel turret, built for harsh environments.

This is a special combination of 1st and 2nd stages that offer the best possible resistance to cold water diving. The MK19 with the dry ambient chamber and warming fins and the X650will allow extreme exposure to cold water. This regulator combination will set new standards for polar expeditions and high altitude mountain lake diving.