People that walk around wearing Bluetooth headsets are not known for looking cool at all. But I think I’d rather wear a Bluetooth headset than point a functional Bluetooth headset in the form of a toy gun. The way it works is that you listen through the gun barrel and you talk into the grip. This Bluetooth handgun handset for the iPhone is called iGiveUp. Instructions on how to create an iGiveUp is available at Instructables.