Griffin iTrip FM Transmitter - Used

Fits 30 pin iPod 

Has a thicker profile similar to a 40 or 60 GB 4th Gen or the 80 GB Video.  

2 cm / 0.75" Tall appox

Will work on any 30pin iPod

Allows you to transmit your iPod contents to whichever station you setup with the side dial.   Tested and works.