We have spent years Braun Oral-B devices used. Especially in recent devices, the batteries have quite done after 2 years "limp". Brown had obligingly enough, replaced the handsets for free. But after about 2 years back the same game. This Philps been like it better because we feel that the teeth are easier to clean. It also comes ran to all corners. They fit comfortably in your hand, a cleaning mode for the brush we use regularly. The different settings are super. If one morning something has more time, you should set the longer cleaning methods. Let's see what the next dental visit brings. We also feel that calculus is minimal only exist, which also have been acceptable in the predecessors, but not like these devices. In terms of battery life, we have to wait. The manufacturers know why the batteries last only two years maximum. In addition, you can change yourself you never. Overall, we can make a recommendation with a clear conscience.