The balanced diaphragm MK11Its chrome-plated brass body is specially designed to reduce size and weight, is an ideal travel companion. Its system features internal parts that are sealed from the elements. 

• Air-balanced valve for smooth inhalation effort at varying depths and supply pressures.
• Compact rugged fiberglass reinforced nylon casing and new exhaust tee take up little space in a dive bag.
• Stainless steel frame on the front cover adds the SCUBAPRO C-Series signature.
• The poppet and lever allows the design to maintain the same overall size as the C350.
• The exhaust tee is based on the S620 Ti's design and contributes to better work of breathing (a 10% improvement over the C350).User controls include a diver-adjustable inhalation effort knob and Venturi-Initiated Vacuum Assist (VIVA).
• Large purge button is easy to activate, even wearing thick gloves.
• Super-flow hose features an oversized bore that allows more air to flow on each inhalation.
• Compact Hi-Flow mouthpiece improves airflow as well as mouth comfort, fitting all mouth sizes, from smaller to largest.