Casio SGW300HB vs Casio F-91W

It's not a good choice if the main thing you want to be able to do is glance at it very quickly and see instantly what time it is. That said, the buttons work well and it looks like it can take some abuse. I've had lousy luck getting Timex watches to last, so if this proves to be durable, it's probably worth it even though I paid extra for features I'll never use.

It's been a great travel watch. Tough enough to knock around, the rubber strap is solid, and the built-in light is more useful than using my phone's flash in tight spaces or in a pinch (especially if my phone is the thing I've dropped).

I replaced the battery and it worked for about 12 hours, then died. I replaced the battery again, same results. Since it is past the 1-year point I'm not even going to bother contacting Casio. From what everyone else says it would be a wasted effort

Casio claims 7-years on a single battery with no daily recharging required. It’s more likely that the strap will break, before the battery will need to be replaced. It doesn’t need any sunlight either, some people claim to get 10 years on a single battery, it really depends on how frequent the light and alarm functions are utilized. In theory you could hide out in a cave for years without worrying about charging or replacing the battery