Nokia 6210 Navigator
The Nokia 6120 Navigator is an update to the 6110 Navigator from last year. It has been slimmed down considerably and boasts better specifications and an on board compass (magnetometer). The 6210 runs S60 3rd Edition Feature Pack 1.
6210 in walking mode
Nokia Maps 2.0 supports pedestrian mode. The 6210 is particular good for this because it has a built in compass (magnetometer) which automatically rotates the maps so that the correct orientation is shown. If you hold out the phone out in front of you the map and perspective in front of you will match.
Pictures from MWC 2008.