Machine characteristics : Net Weight: 127g Machine Length: 85mm Machine Diameter: 32mm Needle Protrusion: 0 up to 4mm Stroke Length: 3.6mm Continuous, quiet, and gentle operation Custom Mast coreless motor, import from Germany Commodity Quality Certification: ce Plug Type: EU Material: Aluminum Type: Tattoo Gun Gun Type: Electric Material: Space Aluminum Operating Voltage: 4-8V Needle Protrusion: 4mm Usage: Permanent Makeup & Body Art Speed: 7.5V10000RPM Battery characteristics : Material:Aluminium Output voltage:6-11v Input voltage:DC5V1A Power display:20％-100％ Working time:Charging for three hours, working for six hours Charge mode:Type-c Connection:RCA cord Battery capacity:1200mAh Size:27.5mm X 62.8mm N. W:57g 1.Output short circuit protection 2.Dual input charging protection (batteries and the control board both equipped with shutdown,overshoot and over discharge protection)