Description Inflatable Automatic Life Jacket Description Single air chamber lifejacket characteristics and main technical parameters: It consists of one air chamber which be made of TPU nylon composite material,automatic (or manual)inflation device,CO2 cylinder,oral inflation tube and outer cover etc. Details Main technical parameters for Single Chamber Life Jacket: 1)Weight: 2)Angle in water:face plane angletrunk angle 3)Freeboard120mm; 4)inflation time 5)Float duration24h; 6)Buoyancy loss after 24hâ?¤5%; 7)Ambient temperature for use:-30°C~+65°C; 8)Validity:3 years. Models Model No. Specification Inflation method Buoyancy CO2 weight GM-L-1 Single air chamber Automatic 150N 33g GM-L-2 Bouble air chamberAutomatic 300N 66g