1. The handpiece was designed with an emphasis on ergonomics, smooth lines and shape and comfortable grip. 2. Longer and even weight body, temperature insulating effectively and tattoo steady. 3. Full disposable needle cartridge, needle-lock automatically, easy plug in-and-out, 100% prevention of cross infection. 4. Simple to adjustable needle depth, exact adjustment, perfect control, magnetic rotation motor, powerful and noiseless, punch frequency.