.This tattoo power supply is advantageous for its switched-mode technology, which allows for efficient electrical energy conversion and convenient output voltage adjustment, has a maximum output voltage of 16V and a current of 2A with overvoltage and short circuit protection. This tattoo power supply includes an OLED display with optimal viewing and an easy-to-operate control dial. Compatible with all RCA cables and clip cords. CAN GO DOWN TO 1-1.5V UP TO 16V