The engine is overkill, much faster than my previous triumph (5000), yet the previous model. There you can say goodbye to the plaque, although the difference is felt. I think the speed is there for something. It's amazing how a few months can make a difference. I think this is the contribution of the famous 3D technology Braun (pulsations and tilt and rotation). I'm impressed if not blown away. I have a feeling of freshness in the mouth as ever. And all in 2 minutes.
Other changes Braun, if smartguide is smaller (indeed, it is easily opened, for once, to insert the supplied batteries Duracell), this time the brush between each beep of the mouth (2 minutes, 4 times 30 seconds) but the advantage is that it will beep 1, 2, 3 or 4 times depending on your progress. And yes, on the road, I do not always take the smartguide. Moreover, it is not intended location for it in the travel package. Well, I find it handy when I brush my teeth, I do not think about what part of the mouth I'm clean (this is a fairly repetitive use almost mechanical).
In short, this toothbrush is exceptional.
