Densely-packed, high-quality bristles give you an extra gentle brushing to remove plaque along the gumline to improve gum health up to 100% more than a manual toothbrush. The W2 Optimal White brush head removes surface stains and reveal a whiter smile clinically proven to whiten teeth in just one week. Safe brushing experience: our sonic technology is suitable for use with braces, fillings, crowns, and veneers, and helps prevent cavities and improve gum health. Sonic technology. High-speed vibrations in your toothbrush handle power up to 31,000 brush strokes per minute that whip up your toothpaste into plaque fighting bubbles, driving them deep between your teeth and along the gum line for exceptional cleaning. You may not notice if you�re brushing too hard, but your toothbrush will. If you start taking it out on your gums, the toothbrush will make a pulsing sound as a reminder to ease off on the pressure. A microchip-enabled technology that detects and synchronizes the smart brush head with the smart handle. The smart handle and smart brush head combination enables Smart replacement reminders. BrushSync technology tracks how long you've been using your brush head for, and how hard you've been brushing. When it's time to replace it, a light on your handle and a short beep will let you know. Our easy-start program gives you the option of a gradual, gentle increase in brushing power the first 14 times you use your new toothbrush. Our QuadPacer lets you know when you've spent just the right amount of time cleaning each part of your mouth, while our Smartimer tells you when you've brushed for the recommended two minutes. Our premium travel case lets you store your toothbrush hygienically with a compact charging base. This toothbrush has a choice of three modes.