brand new and high quality Features: Optional RCA and for DC interface for your choose. Made of aluminum alloy and ABS material, solid and sturdy, lightweight for you to carry easily. Wireless design save you more space and reduce danger of stepping on lines, is a top choice for professional tattoo artists. Easy to operate with no lines, you will get the practical tool. It is also a great gift for tattoo lovers,good choice for professional tattoo The voltage can be adjusted. Tips: 1. In order to extend the battery life, it is recommended to replenish energy for the power supply at least once a month. 2. Purchase Note: Please choose the right connector type. RCA or for DC connector. Specification: Optional connector: RCA/for DC Color: Black Power supply: 5-12v Battery capacity: 2000mAh Voltage: Adjustable -5-12V,0.1V Display: LCD Material: Aluminum alloy and ABS Size:app. 88 x 28 x 32mm / 3.46 x 1.1 x 1.25in Quantity: 1 set Note: Transition: 1cm=10mm=0.39inch No retail package. Please allow 1-2cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Wireless Tattoo Power Supply 1 x USB Charging Cable(other accessories demo in the picture is not included.)