The system can be used as standing light moved freely, or a table light to save space. High quality pipe design for you to adjust the angle randomly. Fast and easy teeth whitening by using 6 pieces of 5w LED with an output at 1500 mw/cm2. Simple and fast pre-preparation program with digital LCD display showing the operation time and light intensity. The 3-LED in the left/center/right side are divided into 3 grades: High, Medium and Low. Patientí»s canine and pre-molar can also enjoy perfect whitening with the equal source of light. Wireless operation by built-in lithium battery. When fully recharged, the machine can be used for 1 hour in case of power failure. With an average of 8 shades, you can finish the full teeth whitening at 30 minutes. Specifications: 1. Wavelength: 420nm-490nm 2. Light resource: SEMA LED 3. Emission time: 5mú¼10m, 15m, 20m by modes 4. G.W.: 5kg 5. Input power: 100-240V AC, 50/60Hz 6. Output power: 12V DC, 2.2A 7. Whatí»s included: SEMA LED Cool Light Teeth Whitening System, Main Poles, Transformer, Machine Base, Instruction Manual, and Mouth Guard. Carton package.