Features14.2?12V Adjustable Voltage: The voltage adjustment accuracy is 0.1V, which can meet the speed requirements of tattoo artists operating different parts. 2Dual Mode Control Switch: It can be controlled by the switch button on the power supply, and can also be controlled by the switch control cable. Just connect the control cable to the Type C port of the power supply to control. 3Large LCD Digital Display Screen: Makes the voltage output display more accurate, which is convenient for observation and operation. Lightweight and compact. 4Standard DC Interface: Suitable for most tattoo machines with DC interface, not easy to fall off, safer to use. Omit power cord, clip cord, and foot pedal, making it more convenient for tattoo artists to work. 5Long Endurance: Built in 1400mAh high capacity lithium battery, fully charged and under the state of 5V working voltage, can continue to work for 4?8 hours.SpecificationItem Type: Wireless Tattoo Power SupplyMaterial: Aluminum AlloyInterface: DC InterfaceBattery: Built In Lithium Battery 1400mAhPower Supply Size: Approx. 84 x 32 x 32mm / 3.3 x 1.3 x 1.3inSwitch Control Cable Length: Approx. 27.5cm / 10.8inCharging Cable Length: Approx. 95cm / 37.4inPower Input Voltage: 5VOutput Voltage: 4.2-12VVoltage Regulation Accuracy: 0.1VCharging Time: 4 hours (charging with a charger higher than 5V is strictly prohibited)Charging Port: USB Type CWorking Time: 4-8 hours for normal usePackage List1 x Tattoo Power Supply 1 x Charging Cable 1 x Switch Control Cable