Two-Minute Timer and IPX7 Waterproof: Aligned with the four-quadrant brushing approach endorsed by dentists, Dada-Tech electric toothbrushes feature a 2-minute timer coupled with 30-second pulse reminders. This design encourages a thorough cleaning of each quadrant of the mouth, ensuring a comprehensive two-minute brush for visibly brighter teeth in just 14 days. Plus, the IPX7 waterproof ensures safe usage in wet environments like showers and bathtubs. Nine Brush Heads with Visual Replacement Reminder: In adherence to ADA guidelines, we advocate for regular brush head updates every three months to prevent wear and bacterial buildup. Our brush heads feature reminder bristles that visibly fade from dark to light, signaling when it’s time to switch. We've included nine brush heads to last you for two years, ensuring you can regularly replace them without worrying about cost. A protective travel cover is also included for on-the-go convenience. Five Cleaning Modes for Every Need: White mode, a balanced mix of power, comfort, and quietness, favored by 80% of our users. Clean mode is ideal for daily cleaning with enhanced comfort. Sensitive mode caters to those with sensitive teeth or newcomers to electric brushing. Polish mode is designed to remove stubborn plaque. Finally, Massage mode provides a gentle gum massage. Select the mode that aligns with your oral health needs and follows your dentist's advice. Over 90% Rounded Bristles for Effective Cleaning: Our commitment to oral health is reflected in our careful selection of premium bristles and handle materials, meeting the A+ industry standards with over 90% rounded bristles. This meticulous design protects both gums and enamel during brushing. The enhanced roundness of our bristles ensures a better fit along tooth surfaces and within gaps, boosting cleaning efficiency by at least 25% and enhancing comfort by 35% compared to typical bristles. Achieve Up to 99.99% Plaque Removal: Outfitted with an A+ grade sonic motor, our electric toothbrush delivers a robust 40,000 VPM of high-frequency vibrations. This formidable synergy of sonic waves and active bristles ensures thorough cleaning, deeply reaching along the gum line and between teeth to eradicate plaque and biofilm with an effectiveness 7 times greater than that of manual toothbrushes.