Everyday digital · Reference notes
Casio
F-91W
F-91W family
A compact digital watch with a straightforward approach to everyday timekeeping.
Photo: Ashley Pomeroy · CC BY-SA 3.0
The essential details.
- Display
- Digital
- Thickness
- 8.5 mm
- Weight
- 21 g
- Functions
- Alarm, stopwatch and light
This page covers the F-91W family. Check the complete regional reference and colour when comparing listings. Casio describes everyday water resistance; we do not assign a numerical depth rating.
Source & scope
Manufacturer specifications checked on 2026-09-17. This is a desk-researched profile, not a hands-on review or authentication of an individual watch.
Read the official Casio specification ↗Brand names identify the products discussed. No brand endorsement or authorised-dealer relationship is implied.
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