Military Sub info

Hi everyone,
I've got a an 1980's Heuer quartz dive watch that I bought in Chicago almost 30 years ago. Much to my chagrin I've discovered that it is probably ladies watch. At the time, it seemed size appropriate but that was many years ago. Anyone know anything about this model, the case back reads 6133 W 20/ 981.115. The words ETANCHE and ACIER as well as QUARTZ are also etched on the back of the case.
Any info is much appreciated.

Etanche = water resistant
Acier = steel

Here it is from the 1984 Heuer Catalogue


It isn't the ladies size- it's what TAG Heuer/ Heuer used to call unisex or Boys size

Thanks very much for the information. It was NOS when I bought it and I think I paid about $200 for it. I seem to recall that I had a choice between this one and an automatic that had a similar color scheme that was slightly larger and perhaps a darker dial?

Yes, take a look through that catalogue- quite a few models with the lume dial