I have find this interesting pic in a japanese book about the Omega Speedmaster.
I can't read Japanese but it seems that they are talking about to chose a watch for EVA and one for Orbiter purpose.... I read crew pref in some stikers... something I have seen also in a G-Shock Book.
It's another interesting prove of the importance of G-Shock watches in a contemporary technical, military, science and heavy duty purpose.
Something to be proud!
ps: some of my friends, when they see my collection told: "you're crazy to throw away your money for this plastic watches... what's you keep in your hand when the fashion for this watch are finished...? They are like swatch in 90's!"
Any help (or action...) to suggest me for make their mouth shut up?)