This DW-6600 was my 13th G-Shock. Not that I am superstitious,  but the first day I wore it, after 13 minutes I got a heavy accident with my mountain bike. I don't know why, but I never wore it again and when it needed a new battery, I let my girlfriend bring and get it from my Casio Service centre.

I bought this one as heavily used, and I think you can see it on the pictures. The seller sold it as a good watch to wash up.

I think this watch is about the most common G-Shock worn by Militaries, Firemen, police officers, etc. I also think this watch has about the most bright E.L. backlight. You can almost read a paper with it in total darkness.