I looked at this watch for about 3 months. I compared it with other models of Casio. I liked what I read.......It is a task to set the altimeter. The barometer is probably accuate, but the thermometer is as was said.........not the most accurate...on your wrist it will read about 20 degrees above the correct temp. You do have to remove it from your wrist to get the more accurate reading....Maybe I am just a little new at trying to get the settings and readings correct.......I think as time goes on I will be moore comfortable with the watch.