DRAGONHAWK B1 WIRELESS TATTOO BATTERY: Super lightweight tattoo battery only 40g, compatible with all RCA rotary tattoo machines.
SMALL SIZE AND LARGE CAPACITY: 2.7*4.2*2.2 cm size, 1,300 mAh of power to work 6-12 hours.
HIGH-SPEED CHARGING: Type-C USB input ports equipped with Dragonhawk's Power and Voltage Boost technology ensure high-speed charging.
STANDARD RCA JACK AND LCD SCREEN: Digital 0.1v adjust tattoo power.