For iPhone / iPad users optimally, for Windows users a small flaw

- Mark arrow keys including text and in combination with Alt or Windows key word-wise or jump to the beginning and the end of a document.
- Media keys for play / pause, track forward back /, up / down and mute
- Home button (corresponds to the home button on the iPhone / iPad)

The keys are big enough for my taste, but I do not write with 10 fingers. The keyboard is also easy and relatively small, the German layout incl. Umlauts is a Schöber bonus that you do not necessarily get at other mini keyboards. Another plus is the on / off switch, because that's actually a (sliding) switch. I find anyway better than a button that you have to hold two seconds.

The only drawback, but only for Windows users: it lacks the left Ctrl key. So if, for example, often works with the clipboard using Ctrl + C / Ctrl + X / Ctrl + V (and who does not), have to get used with this keyboard. Since OS X and iOS, but uses the Cmd key instead of Ctrl for most keyboard shortcuts, that's for Apple fanboys not a problem because on this keyboard the Windows key corresponds to this same Cmd key. So you can use as usual to copy with the left hand Windows key + C.

For battery life I can currently say anything, because I got the keyboard until today. One thing is certain: If the battery at some point is "finished", the entire keyboard for the bucket. Because the case appears to be not intended to be open, so you could possibly install a new battery. Are for this article to e-waste garbage dump's a star deduction.

Addendum: For Apple users there's still a disadvantage: The symbols printed do not match the actual key assignment. Braces are for example printed on Alt + 7 and Alt + 0 (or AltGr + 7 and AltGr + 0), in fact they are but on Alt + Alt + 9 and 8, ie where they are on an Apple keyboard also if the OS language is set to German.