A disadvantage is that during charging while a red LED on the unit lights, but this is not to be understood as a charging indicator light, as it does not go out with fully charged battery. In addition, the device has not been informed of the respective battery level, so you always shaved into the blue, without knowing exactly whether the charge is sufficient.
This is far silly, because the device is usable with empty battery NOT in network operation. The battery life will be several hours according to the description, I can see, however, in my experience, to be completely covered.
Now I will therefore come to the said experiences with this razor.
After receiving the unit, together with first-time use after hours of charging time, I was quite satisfied with the device and the power. However, I have a pretty strong and tough beard, the shaver was very clean through the dense "undergrowth". The result of the shaving could be quite impressive.
However, in the third shave I could see from me entirely incomprehensible reasons a distinct change in performance of the device, which culminated in a painful snagging the cutting unit in the beard. The cutter was clean and not blocked by hair. Initially I came from a not fully charged battery, but also to a further recharge the power was no longer so, as in the first two shaves.
Since I was now again rely on the razor and new problems and painful tweet had to endure over me, I decided, the device now first to return to a replacement device without rescind the sale, because everyone - and so does this shaver - deserves a second chance ...
I hope that I will get with the new device then no more problems, otherwise it goes back definitively.
Until further notice, therefore, first staying fair 3 stars are.