YUNCHI Sonic Electric Toothbrush Rechargeable Ultrasonic Tooth Brush 5 Brushing Modes Smart Timer 40000 Times/Min for Adult Features: 40000 VPM Powerful Electric Toothbrush for Adults - YUNCHI Y7 New Generation Sonic Toothbrush, high frequency power through vibration and soft DuPont nylon bristle, help you reduce the accumulation of plaque, smoke stains, tea and coffee stains, etc. Keep using it for 2 weeks, you can obviously have healthier and cleaner teeth. 5 Optional Modes - White / Clean / Sensitive / Polish / Massage to fit different gum sensitivities and meet different uses. IPX 7 Waterproof, there is a waterproof sheet on the bottom of the toothbrush, very easy to clean it. 4 Hours Fast Charging Lasts for 30 Days - What goes well with travel is that our battery has a large capacity, which can be used for 30 days after 4 hours of charging(2mins/2 times per day). It will bring more convenient tooth cleaning for your travel. Smart Timer - 2 minutes full time and every 30 seconds changing area reminder to develop a good brushing habit as dentists recommended.