T1 Wireless Battery by MastT1 Wireless Battery Tattoo Power Supply. Short press power ON, press + and to adjust voltage, with a 0. 1V voltage adjustment . Long press Power and " " button together to show B0 on the screen, which means start up function on. Long press Power and " " button together, If show B1 on the screen, which means start up function off Comes with a large battery capacity of 1350mAh, Working time is between 4 6 hours depending on machine and voltage.
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