Usb Adult Smart Timer Sonic Electric Toothbrush USB Fast Charging Toothbrush Rechargeable Tooth Brushes Replacement Heads Set Features:1. Through the rapid rotation or vibration of the electric movement, the brush head generates high-frequency vibration, which instantly breaks the toothpaste into fine foam and deeply cleans the teeth. At the same time, the vibration of the bristles can promote the blood circulation in the mouth and maage the gingival tiue.2. 6 types of working modes are optional: White, Clean, Milder, Solid, Comfy; These 5 modes have different effects, and you can choose the mode you need in accordance with your oral iue.3. High-frequency Motor: The brush head is equipped with high-frequency motor and provides 360 degree multi-dimensional cleaning, so that the tooth foam can penetrate into the teeth gap and deeply clean the mouth.4. 30s Zone Change Reminder: If the brush works on your teeth for 30s, it will remind you to change the cleaning zone so that all of your teeth can be brushed and cleaned well.5. 2-min Automatic Shutdown: The electric toothbrush support auto-off time setting. After constantly brushing your teeth for 2 minutes, the toothbrush will automatically shutdown,Description:Color: Black, Pink, White, GreenMaterial: ABSVoltage: 3.7VBattery: 18650-3.7V 500mAHCharging Time: 4hProduct Size: 220*25mmPackage Size: 225*90*27mmWorking Mode: 5 types of modesFunctions: 30s zone change reminder, 2min auto-off timer, fully waterproof