The shave the Braun M90 is very good (at least for my beard). I shave only the neck, because I usually wear a beard and wet shaving is only marginally more thoroughly than this unit. Despite my sensitive skin I could not notice any irritation or injury after shaving. Clear you have to repeatedly deal with a simple device with only one shaving head in the same place, but because you have the Church can sometimes in the village and do not compare the M90 with the top products of renowned manufacturers, which cost 10 times.
The volume we can now sometimes left out - are certainly quieter equipment. That's for me but not a reason not to provide the M90 with a good rating.
(Snapped down on the battery compartment and always) Cleaning with the small brush is easy to do, especially since the razor can be rinsed under running water.
The housing is fully protected against water.
As a very practical, I feel the "twist lock". When the shaver is not in use, thus the foil is protected and also an active accidental activation. Very handy when the device is chauffeured back on the bike in the depths of luggage roll.
With the energy from the batteries it comes to very economical.
The integrated trimmer is "so-so" ... ok for the stub of the upper lip beard, but the contours of my remaining beard I do not want to deal with it. But he is just too small and can not be precise enough lead.
I am very pleased with the Braun M90 and if he thinks long enough, it is just over twenty euros a real snapper. So: Recommended!