Item No.STWL11 Teeth Whitening LightEasy to read and use control panel Audible timer countdown Total hours used recorded on timer for excellent inventory control Lightweight and sturdy for superior maneuverability Wheeled base disassembles in minutes for easy transport Superior technology for unsurpassed reliability (2) Pairs of safety glasses included Stylish aluminum wheeled case protects and carries all parts of the light during transport Power supply: Input AC 110Vand 220V, 50/60Hz12Osram blue POWER LED light units.LED lifeexpectancy :>50,000hoursMagnifying lens: 3 x magnifying /Light intensity:9000-10000MCDBluewavelength460nm-475nm Cooling:powercentrifugalaircooling