Dragonhawk portable charger tattoo power supply. Superior durablity and scratch resistance. 10V start-up function. Specifications: USB Output Voltage: 5V 2.1A Voltage: 5v-12v Fast charge cord: Typc-C Capacity: 7500mAh Size: 118*23*83mm Weight: 222g Full Charge:7 hours work time: 20 hours