Smallest iPhone Bluetooth Transmitter

Weighing just 5 grams, the INFINXX AP23 is laying claim to the smallest iPhone/iPod Bluetooth A2DP stereo audio transmitter in the world (for the moment anyways). This device allows users to listen to the music from the iPhone wirelessly via Bluetooth headphones, and everybody loves wireless stuff. $62 seems to be a fair price to pay for freedom from wires.