First Stage

• Compact machined first stage based on the expedition-tested Apeks DS4 platform.
• Breakthrough, innovative over-molded first-stage endcap and environmental diaphragm help prevent ice build-up that can cause first-stage free flow in extreme circumstances. Also protects the first stage from impact damage.
• Large surface area heat exchanger diaphragm clamp helps increase the gas temperature in the first stage, resulting in improved cold-water performance.
• Unique over-balanced diaphragm design – as the diver descends, the over-balancing feature allows the medium pressure gas in the hose to increase at a faster rate than ambient. This results in superior performance at depth.
• With 2 HP ports and 4MP ports.

Second Stage

• Compact and lightweight second stage improves comfort and helps reduce jaw fatigue on long-duration dives.
• Large heat exchanger to improve cold water performance and freezing resistance. High-performance pneumatically balanced lever-operated poppet valve.
• Large, over-molded self-flushing and controllable purge button.
• The ergonomic Venturi lever is easy to use and locate. Flexible nylon-braided hose has better cold-water performance than a traditional rubber hose.
• Standard metallic hose connection for interchangeability.
• Comfo-bite mouthpiece has a unique bridge that fits across the upper palate and does not require bite pressure to stay in place.
• Re-useable mouthpiece clip makes it simple to change mouthpieces in the field.
• Durable and flexible rubber exhaust tee provides excellent bubble diversion.
• UV inhibitors to help prevent discoloration of the white materials.