The following is a concept phone designed by Sunman Kwon. As you can see, the mooon (according to my source, that is spelled correctly) has some very cool features.

You will note its ability to shed part of its body frame in order to become a Bluetooth headset. As far as I know, there is no phone currently out on the market today that has that ability.

Of course, the detachable headset isn't its only selling point. There is a full touchscreen on the front of it, so you can pretty you got an iPhone. However, with the Mooon's first unique feature, you have something way cooler than the latest from Mr. Jobs.

Source