The MK17 EVO paired with the C370 offers exceptional cold-water performance and effortless breathing. The MK17 EVO's diaphragm design is environmentally sealed, ensuring reliable operation in even the coldest conditions. Its internal components are protected from water and contaminants, enhancing durability. The balanced diaphragm delivers consistent airflow, regardless of depth or tank pressure. Paired with this is the C370, a compact and lightweight second stage, offering smooth and responsive airflow. Its classic downstream valve provides reliable performance, and the adjustable VIVA (Venturi Initiated Vacuum Assist) allows divers to fine-tune breathing effort. The DIN300 connector ensures a secure and high-pressure connection to your cylinder. This combination provides a dependable and comfortable diving experience.