The Philips Sonicare HX7421/01 is an electric toothbrush from the Series 7100 designed to provide a thorough clean through next-generation sonic technology. It generates 62,000 brush movements per minute, which helps remove plaque more effectively than manual brushing. To suit different oral needs, you can choose between four modes—Clean, Sensitive, White, and Gum Health—and adjust the cleaning intensity across three different levels. This black handle features a built-in pressure sensor that uses a visual light ring at the base to alert you if you are pressing too hard, protecting your gums from irritation. The included G3 Premium Gum Care brush head has an oval shape and medium bristles to reach deep between teeth. To help you maintain a consistent routine, the device includes both a zone change timer and a completion timer. Designed for adults, the toothbrush runs on a Li-ion battery that lasts up to 21 days on a single charge. You can synchronize the handle with a smartphone app to track your brushing habits and ensure full coverage. The package comes complete with the handle, one brush head, a charger, and a travel case for convenient transport.