Feature:1. Breathing Scuba Valve: Suitable for 1L scuba diving, providing reliable oxygen supply and breathing support. First stage valve head design to ensure the safety and reliability of the oxygen supply. Suitable for snorkeling and diving.2. M18x1.5 First Level Pressure Reducing Valve: The design of the first stage pressure reduction compartment balances the internal gas pressure, achieves a constant pressure function, the gas flows out steadily, breathes more smoothly, and reduces gas waste.3. Explosionproof: External explosionproof valve for increased safety, more accurate explosionproof index, and easier replacement. Equipped with a medium pressure hose that ensures smooth and stable oxygen flow, adaptable to various diving scenarios.4. Secondary Breathing Valve: A secondary breathing valve takes ergonomics into consideration, allowing for ease of breathing and non congestion. It offers a long lasting companion for your diving activities.5. Safe: Diving valve adopts a constant pressure air outlet device to make the air outlet pressure constant, making breathing very easy. At the same time, an external explosionproof valve design is adopted, which makes the explosionproof index more accurate and safer to use.Specification:Item Type: Scuba Diving Regulator SetMaterial: Aluminum, Silicone, ABS, Stainless SteelWeight: Approx. 1284g / 45.3ozTank Interface Model: M18x1.5MMMedium Pressure Hose Interface Model: 3/8-24UNF.Package List:1 x First Level Valve 1 x Intermediate Pressure Hose1 x Secondary Breathing Valve 2 x Fluororubber O Ring1 x Wrench1 x Instruction Manual