HDD with nav?

[ukgatecrasher]

Hi,

I've been browsing cars a week or so now and I notice that some adverts say nav with hdd and others just say nav.
Was the HDD another box to tick on top of nav or was it part of that system?

Cheers Shaun.

 

[Maniac]

Nav is HDD based. Can also store music on it (12gb).

 

[ukgatecrasher]

Thanks very much, that's what I was hoping to hear.