The Oral-B iO4 electric toothbrush comes with a whole host of unique features including 4 brushing modes, gum protection smart sensor and micro vibrations that all combine to give your teeth and gums a complete cleaning experience. The iO4 electric toothbrush features Oral-B's best technology, combining a dentist-inspired round brush head with micro-vibrating bristles for a professional purifying clean feel at home. The Smart Pressure Sensor helps prevent you from brushing either too hard or too softly to better protect your gums. Gum Guard alerts you the time spent brushing with too much pressure. Replace your Oral-B iO toothbrush head every 3 months for the best results. Combines the unique round brush head from Oral-B with gentle micro-vibrations for a fresh, clean mouthfeel and 100% healthier gums in one week vs a regular manual toothbrush. 4 brushing modes to personalise your brushing: Daily Clean, Whitening, Sensitive, Super Sensitive. Smart sensor mode signals red, white or gree