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Square white resin digital watch with grey dial and buckle clasp

CASIO

CASIO F-91WB-7A Bio-Based Resin Digital Watch 100m 35.20mm

SKU CH-YS4D-WWZ1V

Bio-based resin strap with 100 m water resistance and quartz caliber 4012

  • Watch movementQuartz
  • Product shapeSquare
  • Watch face colorGrey
  • Display typeDigital
  • Date displayDate
  • Strap materialResin
  • Bio-based resin band reduces petroleum-based material use
  • 100 m water resistance suits swimming and snorkelling
  • Quartz calibre 4012 keeps accurate time with minimal maintenance
  • Resin case and crystal stay light at 35.20 mm thickness
  • Digital display shows day and date at a glance

Casio Bio-Based Resin Digital Watch

The Casio F-91WB-7A is a unisex digital watch with a bio-based resin case and strap. It runs on a quartz movement calibre 4012 and shows the day and date on a grey dial. Water resistance is rated to 100 metres. The square resin crystal protects the display.

Suited to daily wear and light sport

This watch suits anyone wanting a lightweight, water-resistant digital timepiece for everyday use or swimming. Buyers who need a metal bracelet, solar charging or smartwatch connectivity should look elsewhere. The fixed bezel and buckle clasp keep the design simple and secure.

100-metre water resistance and quartz reliability

The 100-metre rating handles swimming and surface water sports comfortably. The quartz calibre 4012 keeps time without winding. The bio-based resin band and 35.20-millimetre case thickness stay comfortable during long days. Deep diving or high-impact sports exceed the intended use.

How it compares

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

Price $44.99
Cheaper than about 80% of the 2,679 comparable items (median $130.99).

Specifications

Product
Brand nameCASIO
Design styleSports
Watch face colorGrey
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 resistance100m
More details
Watch movementQuartz
Date displayDate
Suitable forUnisex

Questions about this item

Does the watch need a separate power source such as a battery to operate?

The quartz movement caliber 4012 runs on an internal battery that is already fitted inside the resin case.

Can the 35.20 mm resin case sit comfortably next to a metal bracelet on the same wrist without scratching?

The resin case and resin crystal are softer than metal, so they will not scratch a metal bracelet worn alongside them.

How can I confirm the 100 m water resistance is still effective after I receive the watch?

Press the mode button to cycle through the digital display; if the digits appear sharp and the day and date advance correctly at midnight, the seals are intact.

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