【1】Package includes: [1]Package A: *1 tattoo power supply *1 USB cable [2] Package B: OR 20pcs/box Tattoo Needle Cartridges 【2】Description: 100% New quality Specifications: RCA / DC interface Product accessories: USBType-C charging cable Product size: 5.6cm*4.7cm*3.6cm Product weight: about 59g Charging line length: about 120cm Life time: 5-8 hours Working voltage: 4V-11V Battery capacity: 1950 mAh Product Description: Wi-Li power supply for LED digital display Built-in lithium battery can be recharged for convenient use and energy saving, charging for about 3-4 hours can be used with motor machine for 5-8 hours 【3】Instructions: Press and hold the "+" button for 0.8 seconds to turn it on, long press the "-" button for 0.8 seconds to turn off the "+" and "-" buttons for each press of 0.1V. Optional RCA/DC interface, power supply cable USB interface charging at any time to display 0-100 for power detection display, when the battery is too low, the LCD digital flashing prompts, please charge in time, LCD digital frame is circled when charging, fully charged LCD number The middle is a horizontal.