Conclusion: When the battery indicator problems are eliminated and a real network operation, including with an empty battery, is possible, I would Recommend the shaver. Just as it is not now!
Edit after 3 months: The Montor for length adjustment still works, however, moves happening below 1.4mm of not more comb. Will probably have to reclaim him because he so has no more use for me. The battery indicator is also frequently jumped from 3 or even 4 bar to 0 in the course of 3 months. Really annoying, therefore deliver 1 star.