Product information:Product name; cold light tooth whitening instrumentProduct weight: 48gBattery specification: 3.7-4.2V 200mAhLED wavelength: 160-470nm,7 high-energy LED blue light, energy is about 200mW/cm2Ambient temperature: 5℃~ 40℃Relative humidity: ≤80%Atmospheric pressure: 86kPa to 106kPaSize Information:80*55*26.5mmPacking list:Dental beauty instrument*1