1. White princile Model:YS-TW Teeth Whitening Unit is a new type whitening technology, based on the condition of strong blue LED light and whitening kit accelerant. By the character of nanometer pellet on the surface and Light decomposition, activate the most H2O2 in short order on low or normal temperature. Produce mass oxygen atomy permeate teeth and decompose color molecule, to meet the effect of teeth whitening. 2. Character 1. The specifical wavelength and high density light speed catalyze whitening gel. 2. 6 powerful LED tubes emit a high intensive cold blue light with an output at 6000 MW/CM2. 3. Special design, innocuous silica gel muzzle, make sure stopping intersectional infection. 4. The new model of power supply make sure steady power output and long- time continuous working even in some cities and places with mutative voltage. 5. Time display could shows treatment time to help dentist master treating time and progress and reduce the waiting time of patient. 3.Technical parameters 1. Power supply: AV110-240V,50HZ 2. Power: 60W 3. Light size: 30mmí-80mm 4. Hight light intensity mode : 6000mw/cm2 Low light intensity mode : 3000mw/cm2 5. Light timing: 0-20 mins 6. Power instability