Fake Casio F-91W

Here comes from my collection: a fake Casio F-91W watch. 

It is a fake because it fails two tests: press bottom right button for 3 sec should write Casio; press all three button should indicate all possible segments.

This one doesn't do it. 

Also has funny lights in place of backlight, and the module probably is all wrong, go ahead watch the video, see for yourself.

Also, there is some shoddiness typical of fakes but not in your face.

You probably won't be able to tell it as a fake on somebody's wrist straight away.