Use almost daily without problems. - To choose without too much hesitation, but without losing sight of such a keyboard is not suitable for the office (because of the ergonomics a bit exotic), nor for games (because of a slow response ). Otherwise, we appreciate his nomadic nature (attention while protecting keys). Crucially, there has a on-off switch under the keyboard, in addition to a low-energy automatic setting (a single key press to wake up the device ... wait a bit). Autonomy thus remains correct, and Bluetooth range is no problem. - Verdict: Microsoft more relevant on the device design, as its lines of Operating System ... **** (4 stars only because also part of the gang left, I emit the same point on the layout keyboard than the previous user).