Strap matcher

Best straps for the Casio F-91W

18 mm lugs, 35.2 mm case, reference F-91W-1 (since 1989). Try a strap below; the drawing is to scale.

Casio F-91W on a black rubber strap
Strap
Colour: Black
Strap width18 mm
At the buckle16 mm
Lug to lug38.2 mm

Looks that work on the Casio F-91W

Casio F-91W specs

Made
since 1989
Case
35.2 mm × 8.5 mm thick, rectangular
Lug width
18 mm
Lug to lug
38.2 mm
Case material
Resin
Movement
Casio module 593, quartz digital

From the maker's published figures, gathered with AI help and not yet checked against a watch in hand. Measure your lugs before you buy.

Strap size for the Casio F-91W

What size strap fits the Casio F-91W?

The Casio F-91W takes 18 mm straps: its lug width is 18 mm. A leather strap will usually taper to 16 mm at the buckle.

How big is the Casio F-91W?

The case is 35.2 mm wide, and about 38.2 mm from lug tip to lug tip.

What strap looks best on the Casio F-91W?

Good options are a steel mesh bracelet, a black NATO strap, a navy, red and green NATO strap. Try them all on the drawing above.

Sizes come from published specs. Check yours before you buy: how to measure lug width.