Specification: Brand DIDEEPMaterial Aluminum alloy + Silicone + ABSCylinder capacity 1LWorking temperature 10C (50F) Max inflated pressure 3000PSI / 200 Bar / 20 Mpa Feature: Inflated pressure is not allowed to be more than 3000 psi/200 bar/20 M Pa. Filled 1L oxygen cylinder allows to stay underwater (no deeper than 10 meters) for about 15-20 minutes. Easy & quick inflated by high pressure pump, refilled by a large tank via adapter or filled by electric pump. Aluminum alloy air cylinderis corrosion resistant, & with a pouch for protection. Suitable for novice diver, amateur, water lifeguard & fisherman. Package included:1 x Respirator 1 x Trachea 1 x Air valve 1 x Oxygen cylinder storage bag 1 x Conversion head 1 x Submersible mirror air pump 1 x Diving goggles 1 x Storage bag