Polishing bristles. Dual action whitening bristle system. Dual-action brush head. Polishing action. Replaceable head & batteries. Cheek & tongue cleaner. Power away bacteria for a healthy whole mouth clean plus whitening (study pending). Polishing bristles. Cheek & tongue cleaner. Replaceable head. Replaceable batteries. Use with Colgate Optic White Toothpaste. Dentists & hygienists recommend replacing your toothbrush every 3 months. Made in China.