Casio F-91W

Sun, 12 Jul 2026 00:00:00 -0400

Why it’s here

The F-91W is the reference point for this entire site. Introduced in June 1989 and never discontinued, never meaningfully redesigned, it is the most-produced watch in history — roughly 100 million units by 2026, at a pace of about three million a year, every year, for three and a half decades. When a $20 product stays in production for 36 years unchanged, that isn’t marketing. That’s natural selection.

Casio G-Shock DW-5600E

Sun, 12 Jul 2026 00:00:00 -0400

Why it’s here

The DW-5600E is the direct descendant of the 1983 DW-5000C, the watch that invented the entire shock-resistant category, and it has been in continuous production since 1996. It carries the original brief — survive a 10-meter drop, 10-bar pressure, and keep working — in the original square case, at a price that has barely moved in three decades. Most “tough” products advertise torture tests. This one has thirty years of owners running them involuntarily.

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Casio F-91W

Why it’s here

Casio G-Shock DW-5600E

Why it’s here