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Silver-tone resin digital watch with square 30mm case and matching resin strap

CASIO

CASIO F91WM-7A Digital Watch Silver Resin 30mm

SKU CH-2WY5-K7YHF MPN F91WM-7A

Lightweight 30 mm resin watch with LED backlight, 1/100-second stopwatch, daily alarm and 7-year battery life

  • StyleChronograph
  • MaterialResin
  • MovementQuartz (Battery)
  • ColorBlack
  • ResizableYes
  • AdjustableYes
  • Lightweight comfort from 21-gram resin construction
  • Clear low-light reading via LED backlight
  • Precise timing with 1/100-second stopwatch
  • Long-term reliability from 7-year CR2016 battery life
  • Everyday water resistance handles splashes and brief immersion

Classic Digital Watch

The Casio F91WM-7A is a lightweight resin watch with a 30mm square case and digital display. Its silver-tone finish updates the classic F-91W design for daily wear. Unisex styling and an adjustable resin band with buckle clasp suit a wide range of wrist sizes.

Build Integration

The 38.2 × 35.2 × 8.5 mm case sits flat and unobtrusive under shirt cuffs. Quartz movement powered by a CR2016 cell removes the need for winding or charging. Fixed bezel and 37.00 mm case thickness keep the profile simple for layering with other accessories.

Capacity and Headroom

A 1/100-second stopwatch, daily alarm, hourly signal and auto-calendar running to 2099 cover core timekeeping needs. The 7-year battery life reduces maintenance to a minimum. Water resistance handles splashes and brief immersion but is not suited for swimming or diving.

Highlights

  • Lightweight comfort from 21-gram resin construction
  • Clear low-light reading via LED backlight
  • Precise timing with 1/100-second stopwatch
  • Long-term reliability from 7-year CR2016 battery life
  • Everyday water resistance handles splashes and brief immersion

Specifications

BrandCASIO
ModelF91WM-7A
StyleChronograph
MaterialResin
MovementQuartz (Battery)
ColorBlack
ResizableYes
AdjustableYes
ShapeSquare
DisplayDigital
DateDate
Band MaterialResin
FastenerBuckle Clasp
GenderUnisex
AgeAdult
ConditionNew
BezelFixed Bezel
Case Diameter30mm
Case MaterialResin
Case Thickness37.00 mm
CrystalResin
Water-Resistant30m
Special FeaturesDatabank
Size/Dimensions30mm

Questions about this item

How long does the CR2016 battery last before it needs replacing?

The CR2016 battery provides up to 7 years of operation, reducing the frequency of replacements for daily use.

Does the watch generate any heat or noise during continuous wear?

The quartz movement runs silently and produces no noticeable heat, making it comfortable for all-day wear.

Is any extra tool required to adjust the resin strap to fit my wrist?

The buckle clasp allows simple length adjustment by moving the pin to a different hole; no special tool is needed.

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