2pcs Black&Red Dragonfly Rotary Liner Shader Body Art Tattoo Machine Gun
The Tattoo Machine can work normally within 6-9 volts. It is recommended to use more than 1.5A power supply.(Please pay attention: Don't use more than the narmal 6-9v voltage.In order to avoid  damage,the machine should rest for a few minutes after 1-2 hours working.)