Hawink Tattoo power supply

- Hawink Mini Wireless Tattoo 3.7V Lithium Battery 2400mAh, LED digital display for high and efficient performance. This is an updated version of the battery.
- It has a capacity of 2400mAH, fully charged, run 5 to 12 volts. Lithium battery lasts 5-8 hours depending on your voltage and engine. + -0.1v adjustment mode, totally convenient for every tattoo artist's needs.
- If you have 2 pcs. Power Packs, you can tattoo for a whole day! Charge one battery while tattooing with the other!.