Features: 3 In 1 interface, support for IOS/Android / USB connection to meet your demands. Help improve black and yellow change of tooth surface caused by exogenous pigment adhesion, cleaning and whitening while protecting your teeth. LED blue light teeth whitening device, help remove teeth stains and whitening teeth. Including 16pcs LED light chip, easy and convenient to use with good effect. Efficient teeth whitening, no need for charging, connect to your phone or USB. Specification: Condition: Brand New Material: PET Use steps (with gel) : Brush your teeth Dry your teeth with a tissue or cotton pad Apply the gel to the whitening device or to the teeth (for better results) Hold the whitening device in your mouth;It is recommended to use it once every night before going to bed Package List: 1 x Teeth Whitening Device 1 x 3 In 1 Adapter Notes: 1. The tooth whitening device can only be used by connecting the mobile phone with connecting wires. The mobile phone is not bright when directly connected. 2. Some mobile phones, such as for VIVO, can only be used when the OTG function is turned on in the settings (most android phones can be directly connected. For the very few phones that are not supported, please use the USB interface to connect to the external power.) 1、3 In 1 interface, support for IOS/Android / USB connection to meet your demands. 2、Help improve black and yellow change of tooth surface caused by exogenous pigment adhesion, cleaning and whitening while protecting your teeth. 3、LED blue light teeth whitening device, help remove teeth stains and whitening teeth. 4、Including 16pcs LED light chip, easy and convenient to use with good effect. 5、Efficient teeth whitening, no need for charging, connect to your phone or USB.