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Grey square digital watch with bio-based resin strap, black dial, buckle clasp

CASIO

CASIO F-91WB-8A POP Digital Gray Bio Based Resin Strap Quartz Watch

SKU CH-BGNF-9WNFQ

A lightweight digital watch with a bio-based resin strap, 1/100-second stopwatch and splash-resistant resin case

  • Watch movementQuartz
  • Product shapeSquare
  • Watch face colorBlack
  • Display typeDigital
  • Date displayDate
  • Strap materialResin
  • Bio-based resin strap reduces environmental impact
  • 1/100 second stopwatch enables precise timing
  • Quartz movement delivers accurate timekeeping
  • Digital display shows day and date clearly
  • 20 mm resin case keeps weight light

Casual Digital Watch for Everyday Wear

The Casio F-91WB-8A is a unisex quartz watch built for daily use with a square resin case and matching bio-based resin strap. Its lightweight construction and simple digital interface suit anyone who wants a reliable, low-maintenance timepiece for casual settings.

Splash-Resistant Rating Defines Use Limits

The watch is rated splash resistant, so it handles rain or hand-washing but is not suitable for swimming, showering or submersion. Buyers needing water-sport durability should look elsewhere.

Bio-Based Strap Reduces Fossil-Plastic Content

The strap uses bio-based resin instead of conventional petroleum-derived resin, lowering the product's reliance on fossil materials while keeping the same buckle clasp and 35.20 mm case profile. No additional accessories or software are included.

How it compares

Measured against everything we stock in Analog & Digital Wristwatches, at today’s prices. Recalculated every night.

Price $39.99
Cheaper than about 83% of the 2,679 comparable items (median $130.99).

Specifications

Product
Brand nameCASIO
Design styleCasual
Watch face colorBlack
Item conditionNew
Display
Display typeDigital
Size & build
Main materialResin
Product shapeSquare
Strap materialResin
Closure typeBuckle Clasp
Bezel typeFixed Bezel
Housing materialResin
Case size35.2 mm
Watch glassResin Crystal
Environment & compliance
Water resistanceSplash Resistant
More details
Watch movementQuartz
Date displayDate
Suitable forUnisex

Questions about this item

How precise is the 1/100 second stopwatch in everyday use?

The stopwatch measures to one hundredth of a second, suitable for timing short intervals such as sports laps or cooking steps.

What limits does the splash resistant rating place on water exposure?

The watch handles splashes and brief rain contact but is not designed for swimming, showering or submersion.

Will the 35.20 mm thick case sit comfortably on a smaller wrist?

The resin case is lightweight and the bio-based strap adjusts via buckle clasp, so it fits a wide range of wrist sizes.

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