The IO Series 10 electrical toothbrush with the revolutionary IOSense charging station offers you personalized real-time feedback to know where, when and how you have to clean-for an effective and pleasant cleaning experience. It combines gentle microvibrations with the unique, round brush head from Oral-B and thus ensures the feeling of professional tooth cleaning every day. Change the plug brush of your oral b io toothbrush every 3 months to achieve the best results.