Teeth whitening machine: Feature: - Size: Height:1300mm, Arm length: 1300mm (longest), feet wide:590mm. - The weight:18kg. - The input voltage: AC 110V~240V,50/60HZ. - The output voltage:18V. - Power consumption:40VA. - Blue light wavelength:460-490nm. - Blue light density:200-300mw/cm2. - Whitening time: Each course of irradiation for two or three times, each time 10-15 minutes. **For further product information, please contact Chat Support**