This was the first time that I have owned any watch of this caliber. It is awesome. My past watch was a Timex Iron Man. I like the looks, however I had to get used to the size of the dial. The altimeter works great. I do not need to be accurate within 100 feet. The barometer works wells also. I use the compass along with the hand held Suunto
that I have had for years. I use the stopwatch on my morning runs, however the back light could be a little brighter. Maybe it is dim to conserve power. As far as being waterproof, I can not tell you that. I have been really careful about water after reading some of the other reviews. I do not want to risk it with my watch. If I should bonk in a water hole, I will write another review and keep you posted. I hope that this helps.