Ok, so this is a cheap knock-off of an apple keyboard. From the pictures, it may look pretty swish, but in fact it's nothing like the real thing. It's made of cheap plastic (no aluminium as it may seem) and everything is a bit creaky and badly put-together. The power switch is just a simple flick on-off on the back, the battery cover(2xAAA, by the way) is thin plastic and may snap off eventually, while the 'connect' button is (for no reason I can see) depressed so that it needs to be pushed with a pencil or paperclip, which is not very helpful.
However, none of that really matters, because the main thing is that this does the job. It connects easily enough via bluetooth, works brilliantly with my iPad2 (which does not need to be jailbroken, contrary to other reviews) and is really nice and responsive when typing. There's no difference I can see in response speed between typing on this and typing on my MacBook pro, and it's nicely laid out and comfortable to use, with decent keys.
The keyboard also has a couple of nice features for ipad use such as a 'home' button at the top left, which does the job of the home button on an ipad or iphone, and a 'lock' button at the top right, which locks the screen. Other than that... what can I say? It's cheap, it does the job, and it does it well.