Who could own a watch collection without having the legendary Casio F-91W in it!? 😜🤪 One of the world most famous watch worn by famous people like 👽👾!? (see pictures below for more detail 😉).
More info about the F-91W; here.
If you want to read more about the history of Casio; here. and an interesting article about Casio quartz revolution; here.
And here is my Casio STR-300C running watch 🤓.