The Oral-B iO 3 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, protecting your gums and alerting you to time spent brushing with too much pressure. Replace your Oral-B iO toothbrush head every 3 months for the best results. Oral-B’s BEST EVER CLEAN with REVOLUTIONARY iO TECHNOLOGY for a professional purifying clean feeling & gentle brushing experience. 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. Features 3 BRUSHING MODES to personalize your brushing: Daily Clean, Sensitive, Whitening. The SMART PRESSURE SENSOR signals red, white, or green to alert you whether you’re brushing too hard, too softly, or with just the right amount of pressure. Content: 1 iO3 electric toothbrush, 4 toothbrush heads, 1 charger.