I bought this GPS unit specifically for geocaching. I have been using an iPhone to do geocaching & really like it but wanted something I could use anywhere in the world without having to pay for data. Prices ranged from $166 (on walmart.com) to $199. I also had to purchase an SD micro card for about $10 to store the maps I wanted. The unit comes with a base map that is of no use at all. At least not for my purposes. Maps can be purchased from Garmin but I'm too cheap for that so I downloaded a free routable street map for the USA at http://www.osmmaps.com/maps/united-states It took a long time because the file is huge. Follow the install instructions--super easy, even for non-techies. If you want only certain cities or other countries check here for maps http://garmin.openstreetmap.nl/ (not as easy as the previous link, but if you're as cheap as I am, you will take the time to figure it out like I did) The device powers on quickly and the screen is easy to read even in bright sunlight and shows a strong GPS signal even in heavily wooded areas. When you activate the Geocaching dashboard, the top of the screen shows the name of the cache, terrain, difficulty and size of the cache, and a compass. I am not a premium member on geocaching.com, but if you are you can also access the logs, descriptions and hints. It is easy to load the caches on your GPS with just a few clicks. Uploading the field notes from the GPS to Geocaching.com was a little confusing at first. On your profile, look on the right side under "field notes". I have not used opencaching.com with this device. I have been using it for just over 2 weeks for about 3-4 hours a day and the regular Rayovak batteries are holding up just fine, even with keeping my screen on all the time at the highest brightness setting. Still shows a nearly full charge. The user interface is not as friendly as the iPhone, but what is. The menus & how to access them are not very intuitive. The best tip I can give on that is if you're not on the screen you think you should be, press the back button and try again. I recommend downloading the manual and reading it to set up your device. Then take it out for a test run. If it doesn't show something you think it should, or shows something you don't want, check the manual and make adjustments. This made a big difference in my geocaching experience. By the third outing I had it set up exactly as I want it. Watch out for the option to restore defaults. That got me more than once & I had to start over with my set up. You can make different profiles for different uses and it's pretty easy to switch back and forth. As far as accuracy, I have found it to be much more accurate than my iPhone. It usually puts me within 2-4 feet of finding my cache. If you are looking for a GPS for Geocaching, I would recommend the eTrex20. I have found it to be a good value and after spending time reading the manual, does exactly what I want it to do.
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