First let me tell you that I did NOT buy this GPS unit with the geocaching mind. I heard about the sport, but I never knew any inquiry about what it was until I bought the unit.
Overall, I think this is a good tool … There are a number of positive things and negative things about what I'm going to detail below. In the holiday season, I know these things are blowing their web site to provide space for the beefier brother, which is also available on their website.
Some cool things I like:
Color screen – Easy to read and even in sunny light I can not see the problem.
Downloadable aerial photos and USGS Topo maps – You can also pay for $$ on the map and in general GPS information and can download airfiles from the DeLorme website. It's a bit expensive and I've heard (not tested) that they are now offering an annual subscription to this information, which can save a little money.
Waterproof case and case – dropped into the pond and was not the least damaged. In fact, I did not even know that she knew she was in the water. When I threw it out and wiped it, it seemed as if it had not happened at all. The case is rubber, easy to handle, and I've thrown it without any problems.
Tons of Storage – I've never run the space on this thing, but I said I do not keep a permanent record of all the waypoints and numbers on the device. It has more than enough space (75 MB) for maps and aerial images, as well as the waypoints and caches you want to visit. You can also place a 1 GB SD card behind the unit (even waterproof).
Things I Do not Like:
Slow to Receive SAT Signal – I often find that I need to turn it off and try again satellite capture. Not sure this is just because I'm in the field, or if it's a firmware or software problem. This is a temporary problem, and I find you have a much better job of getting the signals if I do not move. There are several great software packages that will communicate with your GPS find cache etc. . Unfortunately, I did not find any of those who would communicate directly with the PN-20. Files must be loaded into TOPO USA and sent to the device. It's an extra and annoying step and I think it has something to do with USB communication.
Overall, it's a very good unit, especially at the prices I've been advertising today.
Do I have one more? It is very difficult to think that the download interface is a problem with other software. This unit must communicate to any software developer.