"Wireless Tattoo Machine Comprehensive upgrade of performance, stability and battery life.

-Customized High-percision Brushless Motor -Stroke: 4.0mm -Voltage: 5-12V, 0.1V Adjustment. -Full-Color AMOLED Screen. -7-Color Ambiemt Light with Battery Reminder. -Battery Life: Up to 8 hours, Provide 2 replaceable 18500A Batteries. -Timing Function."