7AM2M Sonic Electric Toothbrush adopts the advanced sonic technology that vibrates at up to 40,000 times per minute to effectively remove plaque for a more efficient and convenient dental cleaning experience. The cleaning effect is more obvious than a manual toothbrush, more gentle brushing than a rotary toothbrush, and more protective of tooth enamel. Five cleaning modes can be adapted to different dental cleaning needs. The 2-minute smart timer helps you keep brushing for the right amount of time. Over time, the blue bristles on both ends will gradually fade to white, notifying you to pay attention to replacing the brush head. Just try it! A week of use can help reduce the dental plaque and you get a healthy oral environment. Two weeks of use can completely improve your oral health and help you smile confidently:)