High quality portable backpack belt, not afraid of falling when diving, easy, labor-saving and more safe.After pressure relief, the bottle body and pressure reducing valve can be disassembled, which can be carried on the aircraft easily.360 °rotary valve head can effectively prevent the winding damage of medium pressure pipe and effectively reduce the potential safety hazard.High stable decompression system, precise decompression and smooth ventilation.Luminous waterproof pressure gauge, 80 meters under water still visible.The backpack is equipped with child and mother buttons. In case of emergency, the bottle can be discarded by one button, which is safe and fast. Instructions: 1. In order to bring a better experience of the product , please read the instructions and precautions carefully before using. 2. The maximum filling pressure of this product is 3000psi or 200bar , and the gas with oxygen content greater than 40% cannot bet with clean and dry compressed gas , away from high temperature and open. 3. This product is suitable for recreational diving air source with a depth of less than 10 meters . Do not try to use this product as an air source in deeper waters 4. This product can be used as a backup air source for recreational at a depth of 30 meters . Before using this product in a depth of less 30 meters , you must obtain the scuba diving technical training and certification from a recognized certification body . The use of the breathing div ice by an uncertified person at a depth of more than 10 metres may be dangerous 5. Please store the product in a cool and dry place , avoid direct sunlight or store it in the trunk of the car or the place where the temperatures too high. 6. This product is of high precision . Please do not disassemble the product without professional guidance . Disassembling at will may cause damage to the product Features 360 °Rotary Valve Head 360 °rotary valve head can effectively prevent the winding damage of medium pressure pipe and effectively reduce the potential safety hazard. Easy to Carry After pressure relief, the bottle body and pressure reducing valve can be disassembled, which can be carried on the aircraft easily. Waterproof Pressure Gauge High stable decompression system, precise decompression and smooth ventilation. Luminous waterproof pressure gauge, 80 meters under water still visible. Specification Item name: Diving Tank Equipment Capacity: 1L Gas capacity: 3.0 CU FT/200LITERS Material: aluminum alloy + food grade silica gel Height: 28 cm Diameter: 9cm Maximum pressure: 3000PSI/200BAR/20MPA Net Weight: 1.44KG Weight: 3.15 KG(FULL PACKAGE) Gas filling way: manual pressure pump, electric pump, conversion head Breathing times: 132 breaths on the water surface Available time: about 15-20 minutes Packages 1 x submersible gas cylinder 1 x backpack strap