Characteristics: 1. Fast and easy teeth whitening by using 6 pieces of 5w LED with an output at 800 to1200 mw/cm2. 2. Semicircular lamp with soft mouth guard oxidizes 16 or more teeth. 3. 8 time presetting and 3 different light intensity ensure a wide range of dental bleaching gels. 4. Beep every minute for warning and three beeps indicate the end of the whole process. 5. Large LCD screen shows all the information to facilitate the teeth whitening communication between the dentist and the patient. 6. With an average of 8 shades, you can finish the full teeth whitening at a time. Specifications: 1. Wavelength: 420nm-490nm 2. Light resource: SEMA LED 3. Emission time: 1m,2m,3m 5m, 8m, 10m, 15m, 20m, 30m by modes 4. Packing dimension: 117cm*67cm*15cm 5. G.W.: 11kg 6. Input power: 100-240V AC, 50/60Hz 7. Output power: 12V DC, 2.2A 8. What’s included: SEMA LED Cool Light Teeth Whitening System, Main Poles, Transformer, Machine Base Instruction Manual, and Mouth Guard.