Feature: 1. Aluminum Alloy Material: It is made of high quality aluminum alloy material, which meets the manufacturing standard of diving equipment. Multilayer treatment, corrosion resistance, high pressure resistance. 2. Luminous Instrument: It is equipped with luminous instrument, which can withstand pressure in depth, and the display of the instrument can be clearly seen on the seabed. 3. Convenient to Use: With pressure relief valve, press it to release air and vent pressure, which is convenient to operate. It is practical. 4. Breathing Mouthpiece: Made of food grade silicone material, safe and odorless. Ergonomically designed to easily bite and breathe. 5. Good Sealing Effect: Imported rubber ring is adopted, which has good sealing performance and can effectively prevent air leakage. Specification: Item Type: Scuba Tank Set Material: Plastic, Rubber, Aluminum Alloy Weight: Approx. 2785g / 98.2oz Product Specification: 1L Gas Capacity: 200L Breathing Times: It can breathe on the water for about 132 times Available Time: 15 to 20 Minutes. Package List: 1 x Oxygen Cylinder1 x Rebreather1 x Backpack1 x Manual8 x Sealing Ring 1 x Accessory Note: 1. Oxygen cylinder pressure should not exceed 20 mpa (200BAR or 3000PSI as shown on the pressure gauge)2. Please separate the breathing valve from the bottle before boarding the plane. 3. Press the top pressure release before separating the bottle.