A new GitLab project lets you turn the Casio F91W watch into a Bluetooth-capable smartwatch. All parts are replaced apart from the casing, and an upgraded OLED screen is installed. You can use the modified watch for Bluetooth calling and to receive notifications. The project has now been handed over to the community.
How I Hacked CASIO F-91W digital watch
Casio F91W turned into Bluetooth capable smartwatch with GitLab project - News
Is it possible to make a basic watch like the Casio F-91W Bluetooth and program it to show my phone's notifications? - Quora
Is it possible to make a basic watch like the Casio F-91W Bluetooth and program it to show my phone's notifications? - Quora
Build a retro Casio from scratch with smart features
How I Hacked CASIO F-91W digital watch
How I Hacked CASIO F-91W digital watch
Lilbits: Turning a Casio F91W into a smartwatch, Microsoft brings Taskbar overflow back to Windows 11, and more - Liliputing
Casio F91W turned into Bluetooth capable smartwatch with GitLab project - News
How I Hacked CASIO F-91W digital watch
Is it possible to make a basic watch like the Casio F-91W Bluetooth and program it to show my phone's notifications? - Quora
How I Hacked CASIO F-91W digital watch
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