Details: Details: Colors: Black Suitable battery: 18500 Lithium-ion battery Working voltage: 4.2-12V DC Charging input: 5V/1A Type-C cable Usage time: 4-8 Hours (according to different tattoo styles) Size: 86*32mm W10 wireless power supply: 1: RCA connection,fit all RCA tattoo pen; 2: Physical button adjust , easy to operate; 3: 18500 Lithium-ion battery is removable and replacable; 4: LED screen shows the voltage, remaining battery, and the working mode; 5: Battery display more clearly, you can see the remain battery always； W10 wireless power supply LUXURY KIT including: 1:1pc W10 wireless power supply 2:1pc Manual(warranty) card 3:1pc 18500 battery free send (Battery is provided for free， warranty service for battery is not available) Warraty time 3 months