Grinigh Special USB Laser Teeth Whitening Light for Sensitive Teeth with 12 LED Blue Lights and 4 Desensitizing Red LED Lights, Waterproofed for safety

Before trying to use this with an Android phone, please check that your phone has OTG functionality. This can be done via an app and phones without OTG can be rooted and upgraded via an app (there are many benefits to OTG). This special LED whitening accelerator light tray is designed for people with sensitive teeth and features special red LEDs in addition to the blue accelerator LEDs which greatly reduces sensitivity. The entire device is thoroughly waterproofed and will be unaffected by teeth whitening agents, saliva, water, or other common oral fluids. The tray functions as both a whitening accelerator light and a mouth tray, and is powered by any USB outlet, making it very convenient to use anywhere. Thanks to the USB power, you can use a mobile device, tablet, or computer to provide power and there is no battery component, which is the most frequent point of failure in most accelerator lights. 12 Blue lights are featured for extremely effective acceleration and 4 red lights to ensure reduced sensitivity. These LEDs are built directly into the tray, so that the light is delivered directly into the gel and the drying effect on your teeth is reduced. Convenient, Powerful, and Easy to use, the Mobile Accelerator Tray combines the best of teeth whitening into one device. Works with USB, USB Micro (Android requires OTG), or iPhone