The MK11/C350 is a great choice for dive-trekkers. The balanced diaphragm MK11, with its chrome-plated brass body specially designed to reduce size and weight, is an ideal travel companion. Its system features internal parts that are sealed to prevent water and pollutants from fouling the inner mechanism. The C350 is the most compact second stage in SCUBAPRO’s line, so takes up little space in a travel bag. It is lightweight, breathes smooth and easy, and offers a convenient inhalation effort control knob and a Venturi-Initiated Vacuum Assist (VIVA) dive/pre-dive switch so you can fine-tune your airflow. Pack this smart regulator system in your dive bag and you’re ready to hit the road.