"SPECIFICATION SIZE 185MM HIGH X 108MM WIDEX 50MM DEEP (EXCELUDING CASE), WEIGHT 1KG, NO.OF GASES UP TO FOUR, GAS TYPES FLAMMABLE, TOXIC OXYGEN POWER SOURCES EITHER OF THE FOLLOWING BATTERY MODULES RECHARGEABLE BATTERY JPACK TYHPE PGD/BATT, DRY CELL BATTERY PACK TYPE PGD/DRYBATT, OPERATING TIMES RECHARGEABLE VERSIONS 12 HOURS, DRY CELL VERSIONS 24 HOURS."