I needed to find a GPS watch that would work in the middle of nowhere! I run Ragnar relay races, and I needed to make sure I would be able to track my miles where ever I was. I shopped around and found this one on amazon.com for the lowest price. It also connects to your smartphone via bluetooth. I can get texts, and see who is calling, the weather, my steps for the day, and anything in my Google Calendar. I kept the settings basic, but you can download different screens, and I believe apps. It also tracks your heart rate, and you can create your own workouts and send them to your watch. It has a phone app that it syncs with and can give you more info like sleep, and calories. The watch is rechargeable via USB cord and a clip made to the watch. I charge mine about once a week, I consider myself a moderate user of the GPS function. It is a little bulky on my small wrist, but overall I enjoy this product and would recommend it!