I offered me this watch on my first marathon and I was pleasantly surprised by the ease of use, lightness of the watch, the functions needed to monitor its progress: distance, speed ... The fact can save his race data and download is simple and effective. The only downside is loading the watch, we must put the 'studs' in front if the watch does not load ... In addition, I did not realize that the belt was not therefore included to count calories and monitor their heart rate, you must purchase the belt and more. For a first purchase of Garmin GPS watch, I ra-life!