[Function of Tooth Whitening Kit] - It can remove long-term tooth stains caused by medicine, smoking, coffee, tea, red wine, juice and cola. [Pain Free Without Sensitivity] - Low temperatures and cold light do not cause irritation to the nerves, so you will have no heat, burning, pain during the whitening process and it is completely safe and reliable. If your teeth are sensitive, you can apply a soothing gel to the tooth surface for 3-5 minutes after using the whitening gel to relieve discomfort. [Wireless and Smart Security] - The product can be charged magnetically and the battery can last six times. The product charges very quickly, is 100% waterproof and easy to clean, and once fully charged it can be used without connecting a charger. When it needs charging, just plug in your mobile phone or power bank. [Important note] - In order to achieve the best possible result, contact with all nicotine, tea, coffee and red wine should be stopped during the entire application. For questions, please contact us. ""all Products From Us Have Undergone Strict Quality Checks. if There Is Any Quality Problem Or You Are Not Satisfied With The Product contact Us. we Will Give You The Best Solution.""" All Products From Us Have Undergone Strict Quality Checks. If There Is Any Quality Problem Or You Are Not Satisfied With The Product Contact Us. We Will Give You The Best Solution. All Products From Us Have Undergone Strict Quality Checks. If There Is Any Quality Problem Or You Are Not Satisfied With The Product Contact Us. We Will Give You The Best Solution.