Motorized Micro Needle system-13 Needle (Rechargeable), it is automatic and rechargeable. Easy and also safe to use since the needle tips are hidden inside the guide. Needle tips are disposable. It is safe to share the handpiece with other patient. Be sure to change needles and the guide. It is economical. You do not have to buy a new one every time. Just replace the needle! The needle tips are inserted to your skin at a perpendicularly, Pain is minimized. Needle length is adjustable to different sizes depends on the areas or the purpose of the treatment. It is more convenient to treat narrow areas such as nose, around eyes, or mouth, and the hand-piece allows you to treat areas in whichever angles you want to.