> There existed watches with the same digits, features and buttons before that, but they were in steel. I had an F-87W [1] when I was a kid, which was launched

> There existed watches with the same digits, features and buttons before that, but they were in steel. I had an F-87W [1] when I was a kid, which was launched in 1982. It is almost exactly the same as F-91W. [1] https://www.digital-watch.com/DWL/1work/casio_f-87w https://www.digital-watch.com/DWL/1work/casio_f-87w