Product Description Material: Silicone + Plastic Blue light wavelength: 460480 mm Red light wavelength: 615630 mm Color: white, pink, black Quantity: 1 piece Package content: 1 piece * Dental instrument 1.32 Blue-Red LED teeth whitening kit for Sensitive Teeth: Blue light accelerate lighting, Red light help slow down soreness, intended for sensitive teeth. 2.Touch Button and Fast: Touch once to choose blue light mode (Use 15 minutes) and touch twice to choose blue-red light mode (Use 10 minutes). 3.Magnetic charging: Built-in 300mAh lithum battery, can be used directly 7-8 times when fully charged. 4.Comfortable and Easy to Carry: Food grade and soft mouth tray, no odor and resistance to bite. Easy to carry and you can share the whitening light with your family, friends. 5.Range of application: Teeth Stains from coffee, tobacco, food coloring, aging and other factors that may cause discoloration.