The package includes one Mast Sai rotary tattoo machine and one Mast Wireless Battery
Mast Sai tattoo pen has an interchangeable stroke length of 3.2mm and 3.7mm stroke, has a soft and hard adjust knob.
This machine features a powerful motor and exquisite appearance, Lightweight, super stable. This rotary tattoo machine simple, classic, and the most suitable machine for precise line work, black and grey shading, solid color packing
Operating Voltage:5-10V, The max operating voltage is 10V. Don't run it higher than that or you'll overheat the motor and cause mechanical wear.