Fairywill E11 electric toothbrush is the latest design, with the latest toothbrush technology that the times must provide. E11 Sonic Electric Toothbrush uses the most modern electric toothbrush technology, with up to 40,000 sonic vibrations per minute. The built-in 2-minute timer recommended by the dentist reminds the user to pause every 30 seconds when moving to different quadrants of the oral cavity. Equipped with 8 DuPont heads, one user can be used for 2 years, and there are color-changing bristles to remind you when to replace the toothbrush. The IPX7 waterproof rating allows you to enjoy a refreshing and clean brushing experience in the bathtub or shower without worries. Just charge it for 2 hours and you can enjoy more than 30 days of long-lasting brushing. After fully charged, it will automatically shut down and be carried on travel. Overall, compared with other electric toothbrushes currently on the market, this is an upgraded brushing experience.