The most advanced rechargeable Dr. Pen is here. The same technology used by beauty salon & spa's is now available for home use and for a fraction of the cost. The Dr. Pen derma pen adopts the newest technology so you can control the speed of vibration and the needle length. This allows you to reach maximum results in all areas of the skin. It comes with 2 replaceable & rechargeable batteries as well as the option to use it plugged in. This is the most precise derma pen available.