①A,B output ports are connected to tattoo machines, and F port is connected to footswitch. ②The arrows on the right adjust the voltage. Short Press up arrow or down arrow once to increase or decrease 0.1V. Long press the voltage up arrow or down...

Visilble LED screen shows "operating voltage""capacity" "timimg" . 2 modes of voltage operation that by "click" or "long press" voltage button, +/- 0.1v. Wireless tattoo power supply can work 2-3 hours with ONE battery for tattooing. Two replaceable wireless batteries, charged fully in 1 hours....