1. Long press to turn on/off the device;
2. Choose a Working mode;
3. The equipment preset 10 minutes automatic shutdown function to prevent overheating;
4. You need to unplug the charging cable before turning it on and use;
5. The device works when it touches a tough thing like teeth and metal, if you use it on the skin or other soft things, it will not work.
21 reviews for Electric Sonic Dental Calculus Scaler Oral Teeth Tartar Remover Plaque Stains Cleaner Removal Teeth Whitening Portable with LED