Features： 1、Adjustable 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. 2、RCA Interface: Equipped with a standard RCA interface, it is compatible with all standard RCA rotary tattoo machines, ensuring a secure and stable connection. 3、Efficient: 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. 4、Long 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. 5、LCD 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. 6、Portable: 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. Specification： Item Type: Tattoo Power Supply Material: Aluminum alloy, electronic components Interface: RCA interface Battery: Built in lithium battery 1500mAh Power Size: Approx. 31.5 x 53.7mm / 1.2 x 2.1in Input: DC5V 1A Output: 5-12V Output Voltage Adjustment Accuracy: 0.1V, long press can be quickly adjusted Display: Shows the current voltage, the remaining battery power Charging Time: 2.5 hours (forbidden to use charger higher than 5V charging) Use Time: 8V state can be used for 3-6 hours Product Features: Aluminium alloy structure, hard anodized surface, reliable and durable; circuit hardware, software algorithms new Upgrade, voltage regulation is more accurate and fast; LCD display, with charging over voltage protection, card pin protection, output short circuit protection. How to use 1. 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 the into 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 minutes Auto 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: click Click + 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, charging When the charging is finished, it shows: Full power without blinking. Package List： 1 x Wireless Tattoo Power Supply 1 x USB Charging Cable