The Philips Sonicare 4100 turns brushing into a clean you can actually feel! Powered by advanced sonic technology, it gently pulses fluid between teeth and along the gumline to remove plaque far beyond what a manual brush can reach. The built-in pressure sensor keeps your gums protected by alerting you when you brush too hard, while the Smartimer and QuadPacer guide you through a perfectly balanced two-minute clean every time! 🦄Carolyn