Features: Robust and flexible tube for easy curing at different angles. Quiet and efficient fan for best heat dissipation. A digital LED with sound effects that makes it easier for physicians to use. 6 powerful LED tubes emit a high intensive cold blue light with an output at 6000mw/cm2. Special design, innocuous silica gel muzzle, make sure stopping intersectional infection. The specifical wavelength and high density light speed catalyze whitening gel. Specification: Type: Teeth Whitening Light Material: ABS Color: White Power: 300W Input power: 100-240V, 50/60Hz LightSize:approx.18X74mm2 Time Setting: 1 ~ 20 minutes Light instensity: >6000mw/cm2 Power instability:Package Size: 36*21.5*9.5cm / 14.2*8.5*3.7in Package Weight: 1607g / 56.7oz Package List: 1 * Teeth Whitening Light 2 * Silicone Muzzle 1 * Power Adapter 1 * User Manual