I love the G-Shock Frogman, it drives me crazy O| (lol !!).
Here, there is a link to BBI. The action figure uses a G-shock Frogman for the UDT (Underwater Demolition Team). It's difficult to see the watch but with good eyes we can see the model.
This proves the choice of army corps to integrate those models (5600, GW-200, old Master of G-shock...) in the standard equipment.
Enjoy your life...and your G-shock !!