Summary: There is one flaw in the design of the product -- cannot disable the function keys for bluetooth device switch after pairing. And the device switch is a SINGLE key, does not require any key-combination. In other word, when you try to reach for other keys in the upper left corner, if you accidentally touch one of the function keys for device switch, the pairing gets lost. You have to go back to click the correct function key again. This seems only a little annoying.
Summary: It would be nice if Windows was supported. Geez, just a driver ? The only bluetooth keyboards for windows are the expensive and BIG diNovo (nice, but too big to be practical for stuffing into a knapsack when moving around locations), or the comically little bitty mini diNovo. Then there's all the keyboard/mouse combos, which are also too big because they have the numeric and arrow keypads, as well as all the dorky buttons and LCD clock/calculator.
Summary: The keys are a bit rattle-y (its not a deal breaker) and it is much slower than the Apple keyboard at connecting to your mac and being ready to use. However the convenience of not having to use battery's is a big plus. Arrived quickly, undamaged and well packaged.
Summary: The usability and functionality on this keyboard are excellent. Works well and easily with iPads/iPhones, etc, as well as paring with my main Mac. The solar charging works faultlessly. So why just 3 stars? Well, it feels to me rather cheap and tacky. What you might think was aluminium is just coloured plastic, and the keys are looser and rattlier than the Apple equivalent. The feel of a keyboard is very important to me, as I live on it all day.
Summary: I bought the K760 when looking to upgrade my Apple keyboard, and the ability to switch between three different Apple products really appealed to me, as did the design, and the ability to run this wireless keyboard without batteries. Nice looking product, but it has a few let-downs. The keys are rattly, clicky, and feel cheap next to using an Apple keyboard.