This system is all about ease of use and reliability. The MK11/R395 combines a balanced diaphragm first stage with a classic downstream valve second stage in a lightweight package, making it the perfect recreational combination. The R395 allows worry-free air flow diving in all conditions. Compact, light and easy to carry, it follows your diving passion anywhere. Flexibility of use is provided by its diver adjustable VIVA and its left or right those attachments.