Pocket-lint: When we first saw the first Casio G-Shock Bluetooth-compatible watch - the GB-6900 - there were a couple of things that were different. First, it was connected to an Android smartphone. And second, it only came in black with a white (grey) face.
Now, having been released in the US recently and due to come to the UK in 2013, there's a swathe of other colour schemes, all of which appeared on the Casio stand at CES 2013 in Las Vegas, and compatible only with the iPhone 4S and iPhone 5 at present.