While it worked well in water, after about a week the screen began to mist whenever I went outside!! Don't get me wrong, I loved the functions that came with this watch, but a watch that mists when its 55 and raining is not a watch that I want! Hopefully that was just a defect. Every other aspect of the watch was great. The Barometer and Altimeter are easy to use, and the watch is not too big. While the band is a little irritating (as it refuses to stay under the clip) the misting is the real problem.