8 pcs high power LED fan-cooled.0-20 minutes adjustable timer suitable for more brands tooth whitening gel.Led screen shows all the information. All the operation is so easy. Simple light and handy molding design.Freely to adjust to any angle position. Unique semi-circular head design both arches whitened at the same time.Its suitable for dental chair upright of 4550 mm diameter. Power:24W 12V2A.Light resource: 8 pcs high power blue LED light. Light intensity: maximum6000 mwcm2. light size :3080mm2. Adjustable timer: 0-20MIN. Power instability:1 Package Include1Main unit 1Adaptor 2Protective silicone 1Manual