Casio F-91W F-91W-1
The Casio F-91W has 18 mm lugs, but there is very little clearance at the lug holes: standard 18 mm spring bars often do not pass, and the usual workaround is to reuse Casio's original pins.
✓ Confirmed by two independent referencesIndicative information. Check your watch before buying a strap: whatsmylugwidth.com is not responsible for an incorrect size. Report an error
Strap and attachment
- Lug width
- 18 mm
- Attachment type
- Spring barsTo confirm
- Drilled lugs
- YesTo confirm
The watch
- Brand
- Casio
- Collection
- Casio Collection / Standard Digital
- Model
- F-91W
- Reference
- F-91W-1
- Version
- F-91W-1 (black resin case and band)
- Type
- Watch
- Case size
- 38.2 x 35.2 (rectangular, L x W)To confirm
Questions
How does the strap attach on the Casio F-91W?
Spring bars. System: Casio original pins (resin band).
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Help
What is lug width?
The gap between the two lugs that hold the strap, in millimetres. A new strap must match it exactly: 20 mm lugs take a 20 mm strap.
Measure it in 30 seconds
- Take the strap off, or look at the back of it: many straps print their width.
- Measure the inside gap between the lugs with a caliper or a millimetre ruler.
- Round to the nearest whole millimetre. Most watches use 18, 20 or 22 mm.
Strap, quick release or system?
Most watches use spring bars, so any strap of the right width fits. Many smartwatches use their own band system instead, such as Apple Watch bands or Garmin QuickFit.
Where this comes from
bigtimewatches.com, en.wikipedia.org, notebookcheck.net, StrapsCo, Holland Watch Group.