Clearly, revealing the Courier tablet prototype was not enough for Microsoft, as they have topped themselves once again.  This time, the company produced their skinniest keyboard to date, and this Bluetooth Mobile Keyboard 6000 is totally wireless. 

There is no Bluetooth dongle included, so make sure your computer has Bluetooth built-in before making the purchase. The keyboard is powered by 3 AAA batteries, while the numeric keypad takes just one AAA. Both will be available in October, $90 for the combo, and $45 for just the number pad, if that’s all you want.