Enjoy a brighter, healthier smile with the Philips Sonicare Battery Toothbrush in Midnight Blue, model HY1100/04. Designed as a big step up from manual brushing, this sleek toothbrush uses gentle micro-vibrations and soft tapered nylon bristles for advanced cleaning and polishing. The built-in 2-minute timer with 30-second notifications helps you brush evenly and completely every time. Philips One by Sonicare is lightweight, travel-friendly, and features a matching travel case for your on-the-go routine. A single AAA battery offers up to three months of use, and the included matching brush head only fits Philips One handles. Dentists recommend replacing your brush head every three months for the best results. Make your daily routine sleeker and smarter with Philips Sonicare.