Philips Sonicare Premium All-In-One Brush Head For Complete Care, Without Compromise. Designed By Experts With You In Mind, It Is The Only Brush Head You Need To Achieve Cleaner, Whiter Teeth And Healthier Gums For A Premium Performance: Up To 20X More Plaque Removal, 100% Stain Reduction And 15X Healthier Gums Than A Manual Toothrbrush. For Optimal Usage, Replace Your Brush Head Every 3 Months. Your Brushsync Enabled Toothbrush Understands Your Usage And Notifies You When It'S Time For The Brush Head Replacement.