Here’s one way you could have used it. You drive your car to a remote location. You grab your rifle and your dog, and go hunting. You mark the location of your car on the GPS and start walking. In the evening, you can use the GPS to find your way back to the car. You could also go hiking and use the GPS to find your way back.

The whole point is to mark locations and later find your way back those locations. In the era of geocaching you would have made a custom point of interest and input the coordinates manually before actually visiting the location.

This device actually shows you lots of information you rarely need these days: direction, speed, distance, coordinates, signal strength, just to name a few.