Eventually (after a TV report) I studied a little more with it and am now even more confident Powernapper. As a freelancer, I now not refuel while in office, but basically go anywhere, WOS (at least somewhat) is quiet. Do the rest eh headphones (I recommend good, comfortable closed (!) Models). For this you need of course the right music.
The tracks on the album are suitable for both beginners and old power napping hare. Either with spoken, constructive and relaxing words or even without. These various units of length. Overall, very well suited to turn off!
Oh, there's the alarm clock at the end of a sleepyhead unit also equal to. -D