The Logitech K340 is a very noble keyboard. The appearance in the high-gloss black painted frame impressed easily. That looks just great on the desk :) Sure you can easily see fingerprints ... but even with a microfibre cloth wiped the week about it shortly and everything is gone;) The key touch is great, exactly dosable pressure point, not too heavy, not too light the key resistance. In addition, the noise level is pleasantly low when typing, which is even better some laptop keyboards. Which brings us to the key itself. These are nice and flat, just like the entire keyboard. I was skeptical at first because of the lack palm rest, but I do not really miss. The labeling of the buttons is also good. What I find very convenient, the possibility for Logitech Setpoint, the corresponding software, the Windows 7 even automatically downloaded, the dual assignment of the function keys must be activated permanently. So you do not need every time and hold the FN key. Unfortunately, you can only 5 of the double-assigned keys really freely programmed. I would hope that all double occupancy. For battery life I can not say anything yet.
All in all: strong buy recommendation for people who want to have a really elegant keyboard comparatively cheap.