I Love G's & Can Prove It: The GB-6900 BLUETOOTH.

Interesting vid, thanks for sharing. From what the Casio guy says (or implies) all you'll need is a android phone vith bluetooth v4 (which supports BLE) and Android 4 ICS installed and it should just work. Shame my android phone lacks bluetooth 4, ICS and I lack a GB-6900 otherwise I'd give it a go.

Bet you can't wait for the iphone app