1LIGHTWEIGHT: Aluminum alloy body, strong and durable, compact body, light weight, small body shake, stable operation. 2HIGH TORSION: High speed hollow cup motor, high torsion output, strong force, with higher penetration, providing high frequency needle speed, faster coloring and effective reduction of skin damage. 3ERGONOMIC DESIGN: Tattoo pen according to the hand muscle grip pen posture humanized design, comfortable grip pen, reduce the fatigue of the tattoo artist work. 4COMPATIBILITY: Compatible with most of the tattoo cartridge needle on the market, to preserve the tattoo cartridge needle out of the gas hole and the host of the body direction of consistency, the whole machine out of the needle smoothly, into the ink more, improve the efficiency of tattoo. 5RCA: Out of the needle can be adjusted, with RCA interface connection cable, unplugged firmly, not easy to fall off, stable current transmission.