800MAH: Built in 800 mAh lithium battery, charging 2.5 hours, can last up to 3 to 4 hours. The tattoo pen has a LED display, which can accurately display the remaining power, voltage and convenient for tattooist to observe..COMFORTABLE GRIP: Ergonomic lightweight tattoo pen, non slip and comfortable to use. The tattoo machine compatible with 99% of the tattoo cartridge needles on the market..HIGH EFFICIENCY: The tattoo pen can be stablely used with low noise during the tattoo process, it can be used for a time without heat and has service life. The frequency of the out of needle is also high, and it can be easy to color..2 IN 1: The tattoo pen can be used both wireless and connected to interface with clip cord. It can also tattoo eyebrows, eyeliner, and lips..WIRELESS: Accurate wireless tattoo pen eliminates the need for a separate tattoo power supply, tattoo foot pedal and tattoo clip cord, which allowing the tattoo artist to be unrestricted when they use it.