Apeks XL4 Ocea Stage 3 Din Diving Regulator Set comes with the inherent build quality and performance shared by all Apeks regulators, but having the prime objective of being the first totally sustainably produced regulator available. Every manufacturing detail has been considered and adjusted to ensure each material and process has been optimized in the pursuit of minimal environmental impact. Recycled polymers made from up to 70 percent post consumer waste (black components). Bioplastic plastic parts made from non petroleum based sources. Trivalent chrome plating uses less harmful chemicals and is kinder to the environment. Eco brass is lead free, easier to recycle and has a higher tensile strength than traditional brass. First Stage: Compact machined first stage based on the expedition tested Apeks DS4 platform. 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. High performance pneumatically balanced lever operated poppet valve. Large, over molded self-flushing and controllable purge button. 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. Set includes: 1 x first stage XL4 Ocea, 1 x second stage XL4 Ocea Grey, 1 x second stage XL4 Ocea Octopus, 1 x flexhose black ca. 75 cm, 1 x flexhose black ca. 90 cm.