Style:
The keyboard harmonizes more with the current Mac lineup than the Apple keyboard. Grey aluminum, black buttons with the look and feel of Macbook Pros. That knows how to please. The keyboard is very flat, the tip angle just a little flatter. The weight is also very low and does nothing with the Apple Keyboard. Likewise, the dimensions. However, aluminum is more design element, because it is only on the top cover: below is all plastic, making the device a little less stable. Nevertheless, good quality! The black area is actually polished and attracts fingerprints.
Private:
The keyboard layout corresponds to the 1to1 Apple version and the buttons have approximately the same dimensions, though a little bit more compact. The concave key shape makes typing very comfortable, you come purely immediately! The pressure point is similar to the Apple Keyboard, possibly but a bit softer. But that knows how to please. Large + are the function keys that work after a short driver installation.
The built-in battery lasts up to now a very long time, although I still can to give any details. Downer could in the long term, the absence of its screws, the battery should be down after a few years be.
Features:
The backlit keyboard is decent and DIMM bar. That's a big advantage over the Apple version. Similarly, the possibility that device to load via USB! This saves AA battery replacement. So you have a mobile and a wired keyboard at the same time. The keyboard is automatically in a stand-by mode to save power, and turns itself back on when you hold your hand over it, very good idea! Alternatively, there is a manual switch when you're traveling times.
The main reason for the purchase is likely to be the "Easy Switch", ie the possibility of "pairing" the keyboard with 3 different devices to via function keys. This works extremely well. Bluetooth is here a great advantage: it must be used no 2.4GHZ receiver which is often subject to interference and now have all the equipment Bluetooth: smartphones, tablets, consoles, computers. The Easy-Switch works just fine with all devices! Android tablet, no problem, Playstation 3 also works, Windows works well (even if Windows 7 with the structure of the Bluetooth connection is a bit slower). You can even double equipment put on the buttons: F1 is with me MacOSX while Boot Camp Windows, when it should be started because times. The setup is easy. On Windows you need the driver of the Windows version (K880), and then there can also eg change via volume buttons to sound. However, Apple's own keyboard functions under Bootcamp better (especially the function keys). Nevertheless, most things work (before volume, eject CD, Track, brightness). Of course volume control, track ago, Home Button, etc. Under iOS also: Android keyboard works.
Verdict:
Logitech has promised an Apple Keyboard (and praises it as such in marketing to), but provides a true interconnectivity-monster. You get paid as you more functionality. Why the Logitech does not make clear on its own website, I can not understand, because this is a good argument for the very high price. This is the most expensive keyboard that I have ever bought. Nevertheless, I am very satisfied with the entire package: interconnectivity, mobility (thin, light, detachable cable), backlight and Bluetooth are super functions. The feel is also excellent. This justifies the high price in my opinion. If Logitech at the next version of this keyboard nor the solar function of the other keyboards installs and makes the housing completely made of aluminum, which is the perfect keyboard.