Handpiece feature: 1.Space aluminium material, tough and not easy to scratch. 2.Coreless motor, powerful and noiseless, energy-saving and not easy to get hot. 3.Designed with an emphasis on ergonomics, smooth lines and comfortable grip. 4.Full disposable needle cartridge, needle-lock automatically, cross infection prevention. 5.Simple to adjust needle depth, up to 2.5mm, speed 110-180rps. 6.Needle diameter 0.35mm, stainless steel material, tough and sharp, reduce trauma. Panel feature: 1.Ultra-precise and intelligent panel, 3.5inches digital LCD screen. 2.Used by two handpieces independently at the same time. 3.Pedal supplied to meet different needs.