The MK21 features a modern, cutting-edge design whose size and weight make it an excellent choice for travel divers.
- Air balanced flow-through piston design provides constant and effortless airflow unaffected by depth, tank pressure, or breathing rate.
- Unique thermal exchange design with external fins optimizes freezing
- Optional 5th port cap increases routing configurations with four angled low pressure ports
plus a fifth centralized high-flow low pressure port, ideal for technical