Feature:1. Improve Teeth Color: Cold teeth whitening light can improve tooth discoloration caused by smoking, coffee, tea, red wine, congenital, genetic, and drugs.2. 3 Color Lights: Teeth whitening light machine with 3 colors of light can be adjusted, which is a safe and reliable method of tooth whitening, without any side effects.3. Flexible Tube: Teeth whitening machine adopted gooseneck tube design, durable and flexible for teeth whitening at different angles, which is easy to operate.4. Cooling Fan: Teeth whitening light built in quiet and efficient fan to achieve the best cooling effect, and with sound effect, more convenient for doctors to use.5. Widely Use: Dental teeth whitening lamp with low and even light, adopted delicate, and lightweight design, which is suitable for home and dental hospital use.Specification:Item Type: Teeth Whitening LightMaterial: Plastic Frequency: 50 to 60HZOperating Time: 0 to 30mins Wavelength: Blue light 440 to 480nm Red light 605 to 645nm Purple light 375 to 415nm Voltage: 100-240VApplication: Adhesion of external pigments (tobacco, coffee, cola, etc.) Endogenous pigmentation (mild tetracycline teeth etc.) Dental fluorosisCongenital uneven tooth color Suitable for unknown cause of the black and yellow tooth surfaces.Package List:1 x Host 1 x Power Adapter 1 x Protective Silicone1 x Manual1 x Hex Wrench Note:Cold whitening light will sometimes have postoperative sensitivity, but most of the postoperative sensitivity will disappear in 1 to 2 days. However, the structure of teeth after whitening will not change much after observation under the microscope, and long term tracing will not cause tooth damage, so it is a safe and reliable way of whitening. It is best to wear goggles when using. Children, teenagers and pregnant women are not suitable for cold light whitening. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store