I have exactly the same watch for exactly the same reasons. With saphire glass and a titanium case and strap, it's very light and after two years of being worn constantly, it's still completely unmarked. It's also nicely inconspicuous - it's "just a casio", but those who know, know.

Exactly... add to that the requirement that I want to have the peace of mind of being able to accidentally bang the watch against the metal poles of the subway, etc., without damaging it in some ways, and I always end up with a G-Shock.

It also has a more complicated (chronograph) brother, the LIW-M610. It's fun to see the hands in the subdials spin around as you change functions and timezones.

I also wear this watch every day and have done for a couple of years now. It’s the perfect watch- completely autonomous time, solar powered, classic look while still having digital functions. I love not having to worry about ever setting the time or changing the battery. And it’s waterproof!

The sapphire glass means I don’t treat it especially well and it looks brand new.

For a digital-only lightweight alternative that does everything a watch should do, the Casio F-E10 is ideal.

I wouldn't consider that an alternative to a solar radio watch.

The rather mild water resistance on that model always has me doubting..

Unless you're a diver, it should be OK. I've never taken mine off for swimming or sailing and not had a problem in two years.

The Casio LCW-M100TSE-1AER is a solid choice!