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.It's suitable for dental chair upright of 45~50 mm diameter. Power:24W 12V/2A.Light resource: 8 pcs high power blue LED light. Light intensity: maximum>6000 mw/cm2. light size ：30*80mm2. Adjustable timer: 0-20MIN. Power instability：＜1% Package Include1×Main unit, 1×Adaptor, 2×Protective silicone, 1×Manual