1. The wireless tattoo 3.7V Lithium battery 1500mAh,RCA or DC Interface available for tattoo pen dedicated power supply,The Lithium battery specially designed for tattoo

2. Long press the button 3 seconds to turn ON/OFF, default 5v output after booting,short the press power button to output function - pause, short the press power button again to output function-recovery (recovered voltage is - working voltage before pause).

3.Double click to switch between these voltages form 5V,6.5V,8V,9.5V,11V.

4.When to power is off, short press power button 2-3s will be show battery capacity，the first light is on denote the power less than 20%, the first and second lights are on denote the power 20~40%,the 1,2,3 lights are on denote the power 40~60%, the 1,2,3,4, lights are on denote the power 60~80% 5 pcs lights are on at the same time denote the power 80%-100%.

5. The LED light flashes when charging this power supply.

6.When the battery is less than 20%, the LED light flashes. The frequency flashes 3~4 times per second.

7.Package Items: Includes 1pcs Mini Tattoo Power Supply and 1Pcs USB Cable. It can be used with most tattoo pen machine.

Note: In order to extend the battery life, it is recommended to charge and discharge the battery at least once a month.