The iO 3 electric toothbrush features Oral-B's best technology, combining a dentist-inspired round brush head with micro-vibration fibers for a professional cleaning feel every day at home. The Smart Pressure Sensor helps you brush neither too hard nor too gently to better protect your gums. It has 3 brushing programs to personalize your brushing: Daily cleaning, Whitening, Sensitive. Replace the Oral-B iO brush head every 3 months for best results. Contents: 1 iO 3 handle, 1 brush head, 1 charger.