Able to another brush brand electric toothbrush, I tested this model from Philips. The device is simple: a charger, a handle and a brush are supplied in the box. After the time required to load the brush, it's gone for 2 minutes of operation. To meet the recommended time of 2 minutes, a small signal announces every 30 seconds changing area in the mouth (4 zones brushing so). The trouble is that at the first use, I have not seen any of this signal time so it is discreet. For the next time I am more vigilant. The brush is very fine, I personally prefer the larger formats which also cover a portion of the gum. What bothers me is vibration so intense that they tickle unpleasantly. The advantage of this power is the result: the teeth are smooth under the tongue, the clean feeling is truly present, more than with other brands of brushes.