Sonic Electric Toothbrush Smart Toothbrush Ultrasonic Automatic Toothbrush USB Wireless Charging Adult Waterproof tooth brush S100<br> Main Features<br> High cleaning frequency: max 39600 times/min<br> Help to improve scientific brushing habit: automatically stopped for 0.5 second every 30 seconds,<br> and automatically turn off while reaching 2 minutes ( a suggested the best brushing period )<br> Round brushing head + Dupond bristles : avoid hurt, deep cleaning includes dead corner<br> IPX7 full body waterproof level for direct washing<br> About 60 days duration ( 2min/time, 2 times every day )<br> Two-buttons design: one to choose cleaning modes, another to choose strength modes.<br> 5 cleaning modes: Clean, Sensitive, Massage,White,Polish<br> Wireless Charging<br> Charging time: within 10 hours<br> Package weight:550g<br> (All Date From SAMO Technology Lab)