Check the listing for details. RCA Wireless Tattoo Battery Power Supply For Tattoo Machine Rotary Pen 2400mAh. Color: Black, Condition: New. Listed at 50.99 USD. Descriptions:Material: Ambition Tattoo Power Supply made of aluminium alloy frame and high quality acrylic, the size is small, light weight(57g/2oz), length: 1.49inches, width: 0.98inches, easy to carry so that you can do tattoo work outdoors.High-quality Lithium Battery: The wireless tattoo power supply capacity is 2400mAh, the working voltage is 4-12V, the adjustment is ±0.1V. Fast charging, can be full state in 2 hours.The LED screen displays the working voltage, working time and remaining power.Support Jumpstart: 12V jumpstart function,double-click the power button to turn on(J)/turn off(S) the jumpstart, support your machine to defeat the stiffest of cartridge needle membranes. Compatible with most RCA tattoo machines.Long-lasting Power Pack: Under normal 8V voltage, the voltage stable state can last for 6 hours,long time working the voltage is stable. More convenient and quick to adjust the output voltage. Suitable for most brands of tattoo pens machine, liner and shader.Features:The simplicity and portability opration of Ambition wireless tattoo power will help you to conquer your tattoo.Material : aluminium alloy+high quality insulating plastic+silicone keys.Connector :RCABattery Capacity: 2400mAhCharging time : About 2 hoursOperation time : Under normal 8V voltage, the voltage stable state can last for 6 hours,long time working the voltage is stable.Output voltage : 4-12V, ±0.1VLED display content: output voltage range + battery usage+working timeInstructions for use:Power ON/OFF: Long press "O" key for 3 secondsOutput pause / resume: Short press "O" key to pause the output, and short press it again to resume the output (the resume voltage is the working voltage before the pause).Adjust output voltage: Press the "+" or"-" key to adjust output voltage.12V jumpstart function,double-click the power button to turn on(J)/turn off(S) the jumpstart.Power: The LED display will show the remaining power, and the full power will display 4 divisions. Fast charging through the matching fast-charging cable can usually be fully charged in 2 hours. Please pay attention to the change of power at any time to prevent sudden power loss from affecting your tattooing work.Package Include:1x Wireless tattoo power1x tattoo power cable1x storage zipper boxSKU# Shipping Weight: 7oz Net Weight: 5.71ozMC.BD.3142 - PADDED FR ENVELOPE4 - REGIONAL BOX A10 - MEDIUM FR BOX