-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. **For further product information , please contact chat support**