Vibrating Notification - A built-in smart chip coaches you to a healthier smile by offering an interval pause every 30 , so you know to move on to a new quadrant of your mouth. An auto-timer powers this sonic electric toothbrush down automatically, letting you know you've brushed for the full dentist recommended 2 minutes. 5 High-performance Modes- Electric toothbrush for adults & kids supports 5 modes based on your specific needs: , , , , . mode vibrates 40,000 strokes per minute to break the stains. goes deep into the inter dental, removes the dirt hidden in the periodontal. While ssage mode offers a gentle massage of gums. & 30 -Sonic electric toothbrushes for adults charges with fast speed by cable, all while delivering long-lasting cleaning action between charges. This rechargeable sonic toothbrushes can last 30 (2 min/2x a day) on a full charge, perfect for on the go travel. Weighs just 55g, less than half of ordinary sonic toothbrushes. Ipx7 waterproof for easy water rinsing after each use. 8 Last for 2 - sonic electric toothbrush comes with 8 DuPont brush heads, which you can use for 2 years. High-density bristles and design in " " can go into the gum thoroughly, removes the stubborn tooth stains deeply.You can share a toothbrush, and different color collars can be used to distinguish the toothbrush heads of different family members. You will know it's time to change the brush head. - Equipped with a powerful and industry leading motor producing 40,000 , this sonic electric toothbrushes for adults can effectively remove up to 99.99% plaques. Get a thorough 10 than manual toothbrush, 6X than ordinary electric toothbrush.