not sure i should have changed [SEP] at the suggestion of my periodontist i purchased this oral b vitality precision and am having a difficult time rating it yes i think it does the job when the brush vibrates at the two minute mark i am able to keep brushing because it does not stop until i turn it off the problem with me is that i have been using the oral b cross action battery operated brush for years and in comparing this new brush to the battery operated i believe the battery operated cross action brush did a better job my mouth felt cleaner after using the battery operated brush perhaps if i buy the cross action brush heads for the vitality precision i will be more positive since the periodontist told me i was doing a great job brushing with my oral b battery operated perhaps i was too fast to even consider a different toothbrush