Why We Like It
Because it enables you to use your old headphones on the iPhone and has 3 audio channels!

Summary
This compact, value for money Fitz iPhone Headphone Jack Adapter is the first headphone adapter for the iPhone which offers all 3 audio channels: for Stereo, for Headphones and also one wich has the capabilities of connecting a Microphone.

Manufacturer's Description
Fitz are a small headphone jack adapter for your iPhone. As soft and flexible as your regular headphone cords, small - measuring 3 1/4 inches and built to work with microphones too. Now you can use your favorite after-market headphones or headset with your iPhone!

Fitz features three audio channels, one for stereo, one for headphones and one for connecting to a microphone. Ifrogz fitz are the first iPhone adapter to have all three audio channels.