The first stage of the diaphragm, which is balanced, provides a constant and effortless airflow, unaffected by depth, cylinder pressure, or breathing rate.
 Chrome-plated brass body.
 The environmentally sealed system prevents water and pollutants from contaminating the internal mechanism.
 A dry ambient pressure chamber increases resistance to freezing, ensuring consistent airflow in the coldest conditions.
 Substantial increase in airflow (6,900 l/min)
 Two high-flow (HP) ports and four high-flow (LP) ports.