Professional Nail Equipment 32W LED Light Auto Induction Dismountable LED Lamp Specificaion: Voltage AC 100-240V Power 32W Wavelength 395-405nm Measurement 272*250*123mm 1. It is auto induction LED lamp. When you put you hands in the lamp, the light turns on automatically. 2. It has lithium battery in the lamp, so you don't need to plug the lamp in, when you use it. 3. This lamp is dismountable. If you have something urgent to do, you can take the lamp with you.