What is the difference in respect to compatibily with the Z1 ?

chefwong said:

What is the difference in respect to compatibily with the Z1 ?

They are both fully compatible. But the PNR2 enables a couple more "features" on the Z1. The PNR2 will allow you to enter artist and song data and the Z1 will notify you if your favorites are playing on another channel. I think it does that with sports too. That kind of thing.