- And the Zip firmware & GUI is based on the Fuze+.
- And the Zip’s FM Radio includes RDS (Radio Data System) that displays station’s call letters and song info.
- And the Zip’s screen does not display the elasped time or time remaing on the track that is playing.
- And the Zip uses a micro-USB connector plug instead of the mini-USB plug on the Clip+.
So you see, there are quite a few changes/differences between the two, even though they are based on the same model. 
