The iO 10 electric toothbrush with the revolutionary iO Sense smart charger personalizes your brushing with real-time feedback, guiding you for perfect coverage, brushing time and brushing pressure for a delightfully effortless clean. It combines gentle micro-vibrations with a unique dentist-inspired round brush head for the feel of a professional purifying clean every day. Replace your Oral-B iO toothbrush head every 3 months for the best results. The Oral-B iOSense charger will receive security updates until December 31st, 2027, ensuring your device remains secure against cyberattacks. The software service period is defined as 3 years, starting from the date of purchase