Braun Oral-B Smart Expert Special Design Edition including Braun Alarm Clock. Personalized coaching to ensure even brushing in all areas with the right pressure. Recommended brushing time of 2 minutes, maintained with the 2-minute timer. A combination of artificial intelligence, revolutionary gum protection technology, and a customizable SmartRing. Visual pressure control reminds you of excessive pressure and reduces brushing speed. The lithium-ion battery lasts more than two weeks on a full charge. The toothbrush and smartphone can be charged with just one plug in the premium charging travel case.