Philips Sonicare Confident Clean with UV Sanitizing Travel Case EditionAll brush heads wear out over time, so you'll want to keep an eye on yours to make sure you're still getting a great clean. Our BrushSync technology tracks how long you've been using your brush head for, and how hard you've been brushing. The BrushSync replacement reminder on your handle and a short beep gives you a heads up when it's time to replace it. Features: Remove up to 7x more plaque than a manual toothbrush Three brushing modes Built in