The standard of purity. Removes up to 95% of plaque (In hard-to-reach areas. Data on file.). Advanced sonic technology. Affordable price. Dynamic fluid action cleans between teeth. Replaceable head & batteries. Refill head. Color-wear bristles - Reminds you to change your brush head every 3 months (or when bristles fade). Angled for hard-to-reach places. Multi-level plaque removers. Blue color-wear bristles. Advanced sonic brush head design. The Sonic Difference: Sonic delivers dynamic fluid action, driving toothpaste and water where bristles can't reach effectively removing up to 95% of plaque in hard-to-reach places (In hard-to-reach areas. Data on file.). 16,000 precision micro-sweeps per minute - Help take care of your teeth and gums. Dynamic fluid action - Pushes water and toothpaste in between teeth for better cleaning. Multi-angle, multi-level bristles - Gets at hard-to-reach areas. www.spinbrush.com. Brush head made in Switzerland. Brush handle made in China.