Don’t expect super sharp imagery at every zoom level; this would require additional raster imagery and dramatically increase memory requirements.The PN-40 handles this pretty well though, switching from one type of imagery to another as you zoom in or out.I typically put the most important screens just ahead or behind the map screen, knowing I can easily access them with this feature.
Tones to warn of turns default to little chirps; great in the woods as they sound kind of like bird calls, but they’re a poor substitute for spoken directions for auto navigation.
The screen is relatively small compared to other recently released GPS units (see below), but it is much more visible in various daylight conditions than some of the high-resolution units on the market.
The interface can seem a bit complex at first, but I found it to be fairly intuitive.
Here’s a tip — the Menu button will bring up a different set of options for each screen; you’ll end up using it frequently.
While the PN-40 comes with De Lorme’s Topo USA 7.0, giving you detailed vector topo maps for the unit, I can’t imagine anyone getting the PN-40 and not ponying up for the .95 annual imagery plan.It includes: These are downloaded and transferred to the unit via Topo USA.