Casio Teardown
13/12/2025
The Casio F-91W is the world's bestselling watch. It's an example of honest design. In a culture where every product tries to be all other products (a calendar, music player, chat console, navigator, virtual shopper)... The Casio doesn't aim to be anything besides what it is. It's charmingly naive, cheap and long-lasting with clear functionality.
The hardest step was removing its strap. Those push pins could've safely locked the capsule of a lunar lander! However, the teardown was straightforward from thereon. The watch diassembled into a fortunate number of 11 parts that arranged themselves pleasingly in the frame.
Bostik Sticky Foam Pads were used to raise the parts from the foam base in a totally easy and mess-free way.