Model Number: SK02-#2094 Key Specifications/Special Features: 1. This device is intended for use onlyby confident swimmers, it is not a swimming assistive tools.2. This device is intended ONLY for emergency, for example, cramp under water. But the device is NOT for using as a substitute for a Personal Flotation Device (PFD).3. Never aim device towards face or body when activating.4. Do not wear this device under clothing as inflation could result in injury. Main BodyComponentsCase, Air Bag, Air Tank (CO2),Compass, Band, Activating Lock. Buoyancy Air Bag Bearing Capacity: 200 KG (in Water) Material: Nylon + Polyether TPU Compass Material: Plastic Air Tank Containing: Liquefied Carbon Dioxide Material: Nickel Plated Iron Tank Casing Material: ABS + PC Band Material: PVC Usage Temperature +5℃ ~ +40℃ Storage Temperature -10℃ ~ +50℃ Suitable Group Age 15 ~ 60 Who Can Swim