The iO6 uses Oral-B's best cleaning technology, combining gentle micro-vibrations with a unique, dentist-inspired round brush head for the feeling of a professional clean every day. Clinically proven technology designed to prevent problems before they arise. The Oral-B app allows you to track brushing time and coverage to ensure no area is missed. By syncing with the Apple Health app, the average daily brushing duration is monitored. For optimal cleaning results, the replacement brush head should be changed every 3 months.