Description: Product Category:Mini wireless tattoo mobile power bank Product description: Tattoo machine RCA wireless power supply; Colour: Black; Material: ABS + electronic components; Size: 6.7*3*2.2cm; Features: tattoo power supply, small and light, long battery standby time, according to the characteristics of different tattoo machines, the voltage can be adjusted, each time you press "+" or "-", the voltage will increase/decrease by 0.3V. The power-on and power-off methods are long press for three seconds. Compared with the effect of the conventional tattoo power supply, the compact tattoo power supply can be put into the pocket of the card holder, and the tattoo artist can tattoo anytime and anywhere. 2000 mAh tattoo battery, when the power supply is out of power, it takes about 1.5 hours to 2 hours to fully charge 5 cells, and it can work continuously for 4 hours under 4.5V working voltage; Packing list: Mini wireless tattoo mobile power bank * 1 One USB charging cable * 1 Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.