[eahm]

I used to have the W-520U and it was the best watch I've ever owned ...also the only watch/thing I ever lost in my life, I left it at the gym class in school and the next day boom, gone.

http://www.digital-watch.com/DWL/1work/casio-w-520u

My favorite series since 10-20+ years ago is the ProTrek, which I guess it's part of G-Shock but I don't see them in the site. (I guess the PRT-1GPJ is there at 1999).

https://www.casio.com/us/watches/protrek

https://www.casio.com/europe/watches/protrek/brand/collectio...

https://www.casio.com/intl/watches/protrek/30th/history