The iO2 electric toothbrush combines gentle micro-vibrations with a unique dentist-inspired round brush head for a purifying feel of a professional clean. Replace your Oral-B iO toothbrush head every 3 months for the best results. Oral-B iO Series 2 100% CLEANER TEETH than a regular manual toothbrush with Oral-B’s iO Technology: TOUGH ON PLAQUE, GENTLE ON GUMS DESIGNED FOR AN EASY SWITCH TO ELECTRIC BRUSHES with only 1 touch button, quiet sound, and long-lasting battery PROTECT YOUR GUMS with the AUTOMATIC GUM PRESSURE SENSOR that slows down speed and signals red when you brush too hard EASILY CHOOSE YOUR PERFECT CLEAN with 3 QUIET INTENSITY LEVELS: extra-gentle, gentle, daily clean BRUSH FOR DENTIST-RECOMMENDED TIME with 2-MIN BRUSH TIMER that alerts you every 30 seconds to change your brushing zone Please note: This item includes a UK 2-pin charger, Adapter not included 100% CLEANER TEETH than a regular manual toothbrush with Oral-B’s iO Technology: TOUGH ON PLAQUE, GENTLE ON GUMS DESIGNED FOR AN EASY SWITCH TO ELECTRIC BRUSHES with only 1 touch button, quiet sound, and long-lasting battery PROTECT YOUR GUMS with the AUTOMATIC GUM PRESSURE SENSOR that slows down speed and signals red when you brush too hard EASILY CHOOSE YOUR PERFECT CLEAN with 3 QUIET INTENSITY LEVELS: extra-gentle, gentle, daily clean BRUSH FOR DENTIST-RECOMMENDED TIME with 2-MIN BRUSH TIMER that alerts you every 30 seconds to change your brushing zone