1Strong Motor: Strong needle out force, long term work without burning, low sound, faster coloring, effectively reducing skin damage. Micro motor is used to drive the ink cartridge needle to move, and the performance is stable. 2Ergonomic Handle: According to the hand muscles holding pen posture to have humanized design , surrounded by horizontal flutes, and easy to grasp and has comfortable grasp feelings. 3Needle Design: Tattoo pen machine is compatible with 99 percent tattoo cartridge needles on the market. The whole machine has a stable needle outlet and more ink inlet, which improves tattoo efficiency. 4RCA Interface: With RCA interface cable, it is a perfect tattoo tool for professional tattoo artists or beginners, with firm plugging, not easy to fall off, sensitive contact and stable power supply. 5Different Material: Rotary tattoo pen machine is made of aviation aluminum alloy and electronic components, with excellent workmanship, and the surface of the fuselage is polished to make it more textured.