Description: Material: Tattoo power supply made of high quality acrylic, the size is small, light weight, easy to carry so that you can do tattoo work outdoors. High Quality Battery: The wireless tattoo power supply built in 1500mAh batteries, the working voltage is 4.2V-12V. Fully charged can be used for 4-5h. Suitable for most brands of tattoo pens machine, liner and shader. Adjustable: Voltages are displayed on the LED display, press the "" key to easily adjust the voltage, each time you press it, the voltage is ±0.1V. Press and hold to quickly adjust the voltage. Control Button: Long press to power on or off, short press to pause or start work. Package include:1x RCA wireless tattoo power supply, 1x USB charging cable, 1x Type c interface controller switch. Specification: Material: Acrylic Color: Black Size Chart: 7.3x3.2x3.2cm/2.87x1.26x1.26inch Package Includes: 1 Piece RCA Wireless Tattoo Power Supply 1 Piece USB Charging Cable 1 Piece Type C Interface Controller Switch Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping!