I love everything about this watch including the comfortable leather strap which feels soft and wicks sweat. But as soon as I went outside in 100 degree weather with 98% humidity - no rain - the watch fogged up completely. This watch is "water resistant" so I should be able to wash my hands and that won't happen. The seal must not allow moisture to sweat into the crystal. I had to send the watch back. I will find and buy another one again as I love this watch. Low humidity areas may not be a problem, but once you've washed your hands with it, you can expect it.