I apologize owners that do not meet a total of 4 beard trimmers all my needs. In particular in terms of precision of choice is the 9918 most useful. Neither Philips nor in BaByliss or brown I could see this. Overall, the battery, which is sufficient only for 3 trim transitions annoying. In addition, the change of essays is a very unprofessional manner. On the other hand it fits comfortably in your hand and offers through the small shaving head the opportunity to shave very fine lines, what everyone else can not. The supplied Organaizer may provide better performance than a paperweight. I have the part really for 3 years and now only write a review and therefore believe to have tested the part.