Specification Model Sky288A Size 70*35*16mm Switch Manual Cartridge 510 Cartridge puffs 240 puffs Battery Capacity 1300 mAh Working Voltage 3.7-5V Charging Time 2.5hours Battery Lifetime 400 times Color Customer Request Accessories 1. USB power line,1pc 2.Wall charger,1pc 3.Cartridge,1p