Has 4 channels for saving voltage settings
Ideal for all RCA tattoo machines

Operation Voltage : 4-12V
Battery Capacity : 1500mAh
Dimension : 30mm X 49mm
USB Charging cable included

Battery Life: 7-11 hours depends on Voltage and Cartridges

Recharging Time: 2-4 hours depends on USB-C charger and USB-C cord