previously I use my HUGE Android phone and app to track my run . this solve the huge problem . light , comfortable , and easy to use . once its set-up all I do be return from my run , get close to the computer , and it automatically download my new datum . easily export into Garmin or other online fitness tracking site . I have be really impressed with the GPS antenna build into the wristband , really have to work hard to lose the signal , even deep in a canyon with Redwoods tower overhead . water resistant be a big plus ! my only complaint be in the packaging . REALLY ??!! why do I need 12 different language manual ? such a waste of material with the packaging , but do include adapter for many different country . very please with over 200 mile so far log .