Zina45™ is the next generation sonic toothbrush specifically designed to deliver the most professional cleaning + polishing experience at home. This brush is based on the same patented technology that Dr. Irwin Smigel, world renowned Father of Aesthetic Dentistry and Supersmile's founder, created. 4 Custom Professional Settings: ultra clean: exceptional tooth + gum cleaning. sensitive clean: for sensitive teeth. stimu-gumTM: promotes healthy gums. super shine: polishes and brightens. Our patented 45° angled brush head, features five tufted rows of DuPont® soft, nylon bristles for expert cleaning and gum health. The center bristles effectively clean below the gum line where plaque and bacteria accumulate while precision angled side bristles clean the tooth surface. The polishing head, unique to supersmile® delivers professional polishing with every use. Improves gum health by removing plaque+ bacteria beneath the gumline. 33,000 advanced sonic strokes per minute: provides exceptional cleaning, whitening and polishing to the tooth enamel. Quadtimer + alert: 30-second interval times ensure thorough brushing and polishing of all teeth. (top and bottom, right and left) 2-minute automatic shut off: 2-minute auto-timer helps ensure the optimal ADA recommended brushing time. Patented Ergonomic Handle: Patented handle guarantees that the ADA recommended brushing angle is maintained. Stands upright for hygienic drying. (waterproof handle) Touch magnetic charger: a practical, chromed, matching charger with a convenient USB end to charge anytime, anywhere.