As I use my Desktop PC for a good few hours each week, I can become very fussy about my keyboard and mouse - though when I find the right item I'll stick with it for a long time. I'll stick with this keyboard for a long time!
Last week I bought a Logitech M510 wireless mouse and started looking at keyboards to go with it, this one was selected.
Good thing I like about it, is that it's compatible with the Unify nano receiver that I received with my mouse ... as I have a spare - no problem, both the mouse and keyboard have a little storage compartment for the spare item.
The keyboard is small in size, to achive this, it does away with the six common keys that sit above the cursor keys. Four of these (Home, End, Pg Up, Pg Dn) are now located above the numerical keypad in line with the Function keys. The insert and delete keys are also in line with the Function keys although are above the backspace key. All in all, no functionality is lost.
The keyboard works well to combine some handy features as secondary functions in the function keys - things like 'Homepage, Email, Search, Lock PC' - these I won't use much and didn't use as standalone keys on my previous keyboard but it is good that they are there and they are not the primary function of the F-Keys.
Multimedia controls are provided and kept to a minimum, the basic arrangement consists of Track Back, Track Forward & Play/Pause on the upper left. On the upper right you have Mute/Vol Up/Vol Down. Keeping this basic arrangement keeps the keyboard clean of clutter yet allows dedicated keys for what some people use often ... I'll use these with Winamp/WMP.
I can't comment on battery life, it takes two AA batteries which came supplied.
The keyboard comes with some pop-out feet to raise the back a little. I was considering the K340 but a lot of comments about the raising feet being absent and the lack of dedicated media keys drove me away from it.
If you are considering a wireless keyboard, I highly recommend this.