The Oral-B Smart Sensitive electric toothbrush has been specifically designed for people with sensitive teeth. The Sensitive program, along with the visual pressure control, protects your sensitive gums and ensures a particularly gentle cleaning with the Sensitive Clean brush head. The ultra-thin bristles are tough on plaque yet gentle on the gums. When you connect the toothbrush to the Oral-B app, you also receive personalized real-time coaching to improve your brushing habits. The built-in timer reminds you of the dentist-recommended brushing time of 2 minutes, and the lithium-ion battery lasts for more than 2 weeks on a single charge.