Features1Adjustable Voltage: Wireless tattoo power supply offers a voltage range of 5?12V with a precision of 0.1V, allowing tattoo artists to adjust the speed according to different areas of tattooing. 2RCA Interface: Equipped with a standard RCA interface, it is compatible with all standard RCA rotary tattoo machines, ensuring a secure and stable connection. 3Efficient: Say goodbye to the constraints of traditional power supplies that require multiple accessories. Power supply eliminates the need for power cords, foot switches, and clip cords, making it more convenient for tattoo artists to work. 4Long Battery Life: With a built in 1500mAh battery, it can work continuously for 3?6 hours when fully charged, making it suitable for large scale tattooing. 5LCD Display: Power supply features an LCD display that shows the current voltage and remaining battery power, allowing tattoo artists to easily observe and operate. It also has shutdown, overcharge, and over discharge protection functions. 6Portable: Designed to seamlessly integrate with your tattoo pen, this power supply is lightweight and compact, making it easy for tattoo artists to carry and operate.SpecificationItem Type: Tattoo Power SupplyMaterial: Aluminum alloy, electronic componentsInterface: RCA interfaceBattery: Built in lithium battery 1500mAhPower Size: Approx. 31.5 x 53.7mm / 1.2 x 2.1inInput: DC5V 1AOutput: 5-12VOutput Voltage Adjustment Accuracy: 0.1V, long press can be quickly adjustedDisplay: Shows the current voltage, the remaining battery powerCharging Time: 2.5 hours (forbidden to use charger higher than 5V charging)Use Time: 8V state can be used for 3-6 hoursProduct Features: Aluminium alloy structure, hard anodized surface, reliable and durable; circuit hardware, software algorithms newUpgrade, voltage regulation is more accurate and fast; LCD display, with charging over voltage protection, card pin protection,output short circuit protection.How to use1. Connect the battery to the machine.2. Power on start/pause contains 2 kinds of boot modes, shutdown state long press the power button into the normal start mode.then press the power button to start the machine, then press the power button to stop the machine; shutdown state double click the power button into theinto the enhanced start mode, then press the power button to start the machine, 0.2 seconds to 10V and then down to the current set voltage, then press the power button to stop the machine.Press the power button again to stop the machine.3. Switch off: Switch on the state long press the power button to switch off the machine, no output for 5 minutes automatically shut down, with output without load 5 minutesAuto shutdown. When the power is less than 5%, it will alarm the power is too low and then shut down the machine.4. Voltage adjustment: click + button to increase the voltage, 0.1V increase, long press + button to increase the voltage quickly: clickClick + button to increase the voltage, 0.1V increase, long press + button to increase the voltage quickly: voltage range 5-12V.5.Charging plug in the TYPE C charging cable for charging, charging display: power grid - grid to blink, chargingWhen the charging is finished, it shows: Full power without blinking.Package List1 x Wireless Tattoo Power Supply 1 x USB Charging Cable