Excellent watch, I have always worn the basic Casio Calculator watch (no light, no databank, etc) and finally got around to picking up one of these. It's much larger than the basic model but that was perfect for me, as the basic feels a little small on my wrist. It was very easy to program and set up, am currently wearing it. However, the band feels like it might break a little easier than the rubber ones and there's no information about if it's waterproof or not. The manual says in one place it is water resistant then in another it says it isn't. Can anyone shed some light on the subject?