The gel nail Polish could be dried within 15 sec, fast curing.Power Source: 3Pcs AAA Battery (Not included)Environmental protection, light use of LED, non harmful substances to the human health.Mini Nail Lamp, Easy to carry. Energy-saving LED,Cold light, no harm to your skinItem Type: Gel Polish Nail DryerMaterial: Environmental materialSize: 9.2 cm x 2.5 cmColor: GreenInput: 4.5 VoltLamp dryer style:UV led lamp/nail dryer Power Source:  AAA Batteries (Not included)LED Lights: 9 Led lightPackage Include:1 X  9 Led light nail dryer (AAA Battery Not included)