I am very satisfied with this device. With I know how far I walk/jog, the number of calories I burn (also grams of fat burned) and the time it took me to travel the distance. I can also store all that information on my computer in the form of an organized chart, for revision. It is easy to use too. Although setting it to zero before an activity is a bit of a challenge even if it comes with a manual. It auto sets to zero at 12 midnight. If I prematually start it and want to get back to zero it does not seem to be able to do that unless you reset it. Then you may have to reenter all your data. Other than that, I highly recommend this device.