1Adjustable Voltage: 5 to 12V adjustable voltage, adjustable voltage accuracy of 0.1V, to meet the needs of the tattoo artist to operate different parts of the speed. 2Large Capacity: Built in 1500mAh high capacity battery, fully charged state, can work continuously for 35 hours, do a large area of the tattoo can be used alternately with 2 power sources. 3RCA Interface: This cordless tattoo power supply is the standard RCA, suitable for most RCA tattoo machines, closed tight, not easy to fall. 4LCD Screen: With LCD screen, you can accurately view the voltage, remaining power, working time and other conditions, more convenient for tattoo division operation. 5Cordless Tattoo Power Supply: It get rid of the traditional power supply to use multiple accessories to work, omitting the power cord, tattoo clip cord, foot pedal, so that the tattoo artist work more convenient. 6Easy to Carry: The cordless tattoo power supply is lightweight and compact, so that the power supply and your tattoo pen into one, the operation is convenient.