Toothbrushes Most important features: Removes up to 10x more plaque vs. a manual toothbrush High cleaning frequency: Max 40,000 strokes / min Premium high-density bristlesAntibacterial and durable, dissolve deep tooth dirt effectively and clean dental plaques quickly. IPX7 waterproof for easy water rinsing after each use. Last for 30 DAYS after only 4 hours full charging(2mins x 2 times per day). Rechargeable Sonic toothbrush comes with a USB charging cable for charging anywhere. High-Efficiency Cleaning 4 Modes as followed : Blue light :Whiten-For Removing surface stains.Green light :Clean-For Daily Clean.Blue light :Polish -For Brightening and Polishing Help scientific brushing habit: 30s + 2mins Smart TimerIn-handle timer pulses every 30 seconds to let you know when to switch areas of the mouth,2 minutes end brushing reminder to develop a right abd healthy brushing habit. Removes up to 10x more plaque vs. a manual toothbrush 40000 strokes per minute,remove plaque effectively and thoroughly clean the teeth and mouth 2 minute auto-timer ensures dentist recommended brushing time LED charging indicator with power shortage remainder and power-off protection Eletric toothbrush offers 4 modes Whiten : Recommended to remove surface stains. Clean: Standard everyday cleaning mode.Recommended for everyday use. Polish:Recommended to increase shine on teeth,this mode will help remove stains and shine your teeth. Massage:Great mode for individuals with sensitive gums Waterproof has been updated to IPX7 Fast charging for 4 hours can use 30 days. Low battery reminding and auto shut off after full charge, compatible with any charger or equipment with a USB port,convenient to use at home or traveling.