Specifications                       Working Pressure :   30MPa     Start alarm pressure :   5.0 ~ 6.0MPa   A regulator output pressure :   0.7MPa     Size :   520x350x240mm   Package Weight :   about 8Kg (not inflated) Gas flow rate :   ≥500L / min   Respiratory resistance :   <4.2mbar   Cylinder water capacity :   6.8L     Gas volume :   > 2040 l     Use time :   68 minutes (by air consumption 30 l / min        calculation