FULLY RECHARGEABLE BATTERIES - No need to buy replacement batteries recharges just like a mobile phone. COMPACT DESIGN - Lightweight and small enough to carry around. With the added benefit of portable power, you are guaranteed of your fungus treatment for nails anytime, anywhere; even while on the go. EASY, PAIN-FREE USE - Just place on affected nail, push a button and it does its magic for 7-minutes, nail fungus remover automatically shuts off once it's done. No pain, no complex procedures and no cleaning up afterwards. FAST ACTION, HIGHLY EFFECTIVE- All New 2019 Model Now Fitted With a German top-rated laser diode. TOP QUALITY NAIL LASER - fast effective results in nail fungal infections.