I had no idea that this would only operate for 2 minutes. I haven't timed it and I think it's less than 2 minutes and then it won't give another 2 minutes. Who in the world thought this was a good idea? So, I've spent good money for an electric tooth brush that I leave to charge between brushings but can only use for seconds at a time and then have to finish manually. Oh and check out the price on the replacement brushes before you buy, they are not cheap! Really regret this purchase!