It's a keyboard. Not much else to say about that except that the right shift key is horribly situated right of the up arrow and above the right arrow, so when touch typing I'm constantly moving the cursor to the line above when what I want to do is type a capital. I'm trying to train myself to always use the left shift key but it's hard to break the habit of many years.
I'm very impressed by the battery life. I've been using this for a month now and apart from the initial charge, I've yet to recharge it.
The switches look a little flimsy, but I tend to leave it on all the time so don't really use them.
It does have an auto 'off' feature which probably explains the battery longevity, however it can take a few seconds to re-establish the Bluetooth connection which can be a little annoying if you're in a hurry.