MK11/C370 + R095 OCTO:A first stage specially designed to reduce size and weight, plus SCUBAPRO’s most compact second stage, make for an excellent travel regulator system. Air balanced, the Mk11/ C370 is smooth breathing, ultra-reliable and provides divers with an effortless airflow without breaking the bank. The R095 Octo features the classic downstream valve design, pre-set inhalation and Venturi-Initiated Vacuum Assist (VIVA) and reversible hose attachment.