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 LightMaterial: ABSColor: WhitePower: 300WInput power: 100-240V, 50/60HzLightSize:approx.18X74mm2Time Setting: 1 ~ 20 minutesLight instensity: >6000mw/cm2Power instability: <1%Package Size: 36*21.5*9.5cm / 14.2*8.5*3.7inPackage Weight: 1607g / 56.7ozPackage List:1 * Teeth Whitening Light2 * Silicone Muzzle1 * Power Adapter1 * User Manual