Portable cooler box specification Refrigeration space 170*46*18mm Dimensions(L*W*H) 187*80*68mm Refrigeration temperature 2~8¡ãC(under ambient 22~28'C) Input /output voltage(adapter) AC100V~220V/DC9.0V Output current (adapter) 2A Input/output voltage (car power) DC12V/DC9.0V Current (vehicle power ) 2A Voltage (lithium battery) DC7.4V Capacity (lithium battery) Internal 2300mAh/external 8200mAH Power rating 7.6W/ DC9.0V,5.9W/DC7.4V Product Net weight 540g. Packing: 250*220*110mm carton box Net WT:540g. Gross WT:1.6kgs.