It feels like you went to a dentist! It has approximately 2 times the removal power of dental plaque compared to hand polishing. The combination of Browns proprietary high-speed reverse vibrations of 7,600 times per minute and the round brush encapsulates each tooth to achieve approximately twice the removal of fingerprints. The included basic brush maintains high teeth removal power, while the teeth and gums are more gentle and more comfortable to fit. Convenient for daily brushing. No need to replace batteries. (When fully charged, it can be used for about 5 days) Limited quantity value for the trial price.