The Darx Wireless Tattoo Pen Kit makes it easy and convenient to give a tattoo for the first time. It is unlike the usual tattooing tools in that it feels like a real pen in the hand, making it easier to execute fine lines and shading. This machine is easy to learn and use, so you can quickly get the design you want just the way you want it. Features an ergonomic design, lightweight construction and powerful, silent motor to provide comfortable and reliable tattooing. With adjustable speed and voltage settings, precision needle depth control and a range of safety features, you can create remarkable artwork with confidence. Plus, the kit includes easy maintenance items, so you can swiftly clean and maintain your pen and spend more time perfecting your craft. Specification: Stroke: 3.0 mm Needle Protrusion: 3.5 mm RCA cord connection Start voltage: 5.5v Operation voltage: 7-11v Max operation voltage: 11v Rpm range stitches/sec: 3500-9500rpm High Torque Length: 118mm Width: 28mm Machine weight: 227g Wireless battery weight: 50g   Note: We recommend to use the ink only for practice skin. Do not use on human skin