tattoo power supply 100~240V input 3A/0~20VDC output tattoo power supply100~240V input3A/0~20VDC outputState of the art design features a super smooth & stable output of 20 volts @ 3 amps, 10 turn potentiometer for fine adjustments,(2) 1 phono jacks, onboard transformer, 100 volt input (240 volt input available),dimensions= H 2x W 3.5 x D 8.5,Material:stainless steel cover