Ambition Tattoo Power Supply made of aluminium alloy frame and high quality insulating plastic, the size is small, light weight(73g/2.57oz), easy to carry so that you can do tattoo work outdoors. The Wireless Tattoo Power Supply built-in 3x 600mAh lithium batteries, the working voltage is 3.7V, output current is 2A. Fast charging, can be full state in 1.5-2 hours. Under normal 8V voltage, the voltage stable state can last for more than 5 hours,long time working the voltage is stable. There are 8 output voltages, which are displayed on the LED display, corresponding to 5-12V. More convenient and quick to adjust the output voltage. Suitable for most brands of tattoo pens machine, liner and shader.