An extension to the SmartSeries, Oral-B 7000 is different from its predecessor in the following ways: • 7000 has an additional 6th cleaning mode, the tongue cleaning mode. The toothbrush is compatible with 7 additional brush heads, unlike the Oral-B 7000. • Oral-B 7000 cleans plaque 300% better than Oral-B 6000. • Oral-B 7000 comes with an additional travel case.