The iO Series 10 electric toothbrush with the revolutionary iOSense charging station provides you with personalized real-time feedback to know where, when, and how to brush – for an effective and enjoyable brushing experience. It combines gentle micro-vibrations with Oral-B's unique round brush head, ensuring a professional clean feeling every day. Change the brush head of your Oral-B iO toothbrush every 3 months for optimal results.