• 16 replacement heads: allows you to replace them at any time. Each brush head has a different color identification ring to help you collect your own brush head and share it with your family. • Brush head design: Inspired by dental instruments used by professionals to provide you with superior cleaning. The shape of the brush head allows the bristles to surround each tooth for individual cleaning. The Precision Clean brush head allows for deep cleaning, keeping your mouth clean and your gums healthy. • Soft bristles: Our premium DuPont bristles are soft, flexible, and ergonomic to provide an effective solution for plaque removal, especially in hard-to-reach areas and to keep gums healthy. • Dentists recommend: changing your toothbrush every 2-3 months. The replacement brush heads are fully FDA approved and provide superior cleaning compared to a traditional brush, removing up to 300% more plaque from the gums.