Features： 1、2 Pedal Modes: Compatible with all standard 6.35mm plug tattoo machines, 2 pedal modes, normal mode and master mode (anti fatigue mode). 2、Comfortable Hand Feeling: Outer shell is made of metal matte material, which makes the hand feel comfortable. 3、Skid Resistance: Tattoo power supply has 4 anti slip pads on the bottom, which are not easy to move. 4、Working Voltage: Input voltage 100?230V, universal in the world, output voltage 0?18V adjustable, adjustment accuracy 0.1V. 5、3 Color Choice: Blue, black, gray, 3 colors, you can choose according to your needs. Specification： Item Type: Tattoo Power Supply Size: Approx. 8.8 x 8.5 x 3cm / 3.5 x 3.3 x 1.2in Material: Alloy Power Cord Interface: USB and 8 shaped interface Rated Current: 1.5A Output Voltage: 0-18V Voltage Adjustment Accuracy: 0.1V Package List： 1 x Tattoo Power Supply 1 x Power Cord