?????Sonic Technology with Fluid Dynamics?Powered by a high-frequency magnetic drive sonic motor, it delivers stable 47,000 vibrations per minute (VPM). The powerful fluid dynamics generated can penetrate deep between teeth and along the gumline, removing plaque that manual brushes miss, for a dentist-level deep clean. ?????Dupont Brush Heads & 5 Professional Modes?Features "W-shaped" contoured brush heads with Dupont diamond-grade bristles for superior fit and cleaning. Combined with 5 customized modes (White/Clean/Sensitive/Polish/Massage), it's expertly designed for sensitive gums and whitening needs, offering precise care. ?????60-Day Fast Charge?An built-in intelligent control chip ensures stable power output and reduced noise. With fast charge technology, a 3-hour charge provides up to 60 days of use, far exceeding most products on the market, making it ideal for travelers. ?????IPX7 Waterproof & Smart Brushing Reminder?Rated IPX7 fully waterproof for safe use in any bathroom environment. Equipped with a 2-minute smart timer, 30-second quadrant reminder, and intelligent power display to guide scientific brushing habits and enhance the overall user experience. ?????Focus on Technological Innovation?Fairywill is committed to technological innovation over expensive marketing. By optimizing core components like the magnetic drive sonic motor and adopting professional Dupont brush heads, coupled with eco-friendly, minimal packaging, we efficiently manage costs. ?????Complete D7s Electric Toothbrush Set: IPX7 Waterproof with 6 Brush Heads? Ready-to-gift set includes 1 handle, 1 holder, 8 brush heads (24 month supply),1 travel case. IPX7 waterproof for safe shower use.