the battery longevity leaves much to be desired! After less than a year it has to be now recharged every other day. For me, less the problem, but I can imagine that it is negative for the people much (overnight) are ünterwegs. They are, I think, better advised to buy the entry-level model that is probably only mininmal worse. The battery is the same, the brush head as well. Only the speed and features such as Anpressdruckkontrolle missing.
