Summary: The unit was marketed with the ability to save tracks and view them later on your own computer. It is the main reason for my purchasing the device. It turns out the tracking file is isn't written in the industry standard GPX format. The company went to Adobe, a graphics company, to have them write the format. It doesn't work with any mapping or data tracking program but the one that comes with it. The program is very basic with what it does.
Summary: Very easy to use. Lightweight; use lanyard to put around your neck. Preferred it over complicated GPS unit when finding a survey marker 1300ft thru the woods by using its compass mode & # of yards (steps) we needed to walk from stake I "marked" with it at the road. Is excellent for finding your way back to car, campsite, etc when in the woods.
Summary: The receiver is quite weak as it fails when I get close to my 4-story work building in suburban Silicon Valley. So, I imagine this is probably of no use in urban canyons like NYC, Tokyo, and parts of San Francisco.
Summary: Accuracy of the 3 points you can input in varies. It was off by as much as 20 yards at times. So for things like geocaching, it might not be accurate enough. But for finding your car in a gigantic parking lot, or when used in conjunction with a topographic map, or when there are foot paths, or you're at a park without a map, it's more than accurate enough. If you're really out in the middle of no where, I'd still insist on a proper Suunto, and topographic map.