iO™ is Oral-B's best cleaning technology, combines the brush head with gentle micro-vibrations, and the innovative linear magnetic drive concentrates the energy where it is most needed - at the tips of the bristles. Surprisingly gentle cleaning and quiet operation. Removes up to 100% more plaque compared to a regular brush. Artificial Intelligence recognizes the cleaning style and provides advice in the Oral-B app so you don't leave any areas uncleaned. The Bluetooth interface connects to the phone. Smart luminous pressure sensor. 4 cleaning modes, 2 speeds. Charger, travel case. in the set 1 cleaning head "Ultimate Clean"