Another joint development of Contour Design and Bluetrek, the Metal Bluetooth Headset ($80) is the thinnest wireless Bluetooth 2.0 ear piece we've yet seen for cell phones such as the iPhone: it has the rough dimensions of a Sony Memory Stick with a rubber-tipped in-canal earphone sticking out of one side. With a silver aluminum body that's accented by chrome, Metal has three tiny buttons on one edge and a unique power connector on the other, requiring…
