1. treatment with multiple functional options, more comfortable. 2. non insulated needles:it is possible to operate equal therapy to epidermis layer and dermis layer as the needle do not have insulation plating 3. stepping motor type: different to existing solenoid type, the needle inserts to the skin smoothly with no shock, and causes no bleeding and no pain after the procedure. 4. gold plated needle:needle is durable and also has high bio compatibility by applying gold plating. 5.precise depth control.0.3-3.0mm perates epidermis layer and dermis layer by controlling the needle depth. safety needle system:-sterilized disposable needle tip. -smachine from a red button. 6.elaborate needle thickness.the needle structure easy to penetrate the skin with minimum resistance..syi