Casio F-91WB-7A Quartz Digital White Resin Watch (F-91WB-7A)

Sale price
R 675
List price
R 899

The Casio F-91WB-7A is a modern reinterpretation of the legendary F-91W, reimagined in a clean all-white colourway that brings fresh contemporary style to a digital icon. Since its debut in the early 1990s, the F-91W has earned cult status as one of the most recognisable and dependable digital watches ever made. This white variant maintains every element of that beloved design — the crisp LCD display, the distinctive octagonal case shape, and the supremely functional resin construction — while offering a lighter, more versatile aesthetic that pairs effortlessly with any wardrobe.

At Cassims & Co., we are proud to offer authentic CASIO watches that exemplify precision, durability, and accessible horological excellence. The F-91WB-7A features a reliable Japanese quartz module with an exceptional 7-year battery life, daily alarm functionality, chronograph with 1/100-second precision, and water resistance to 30 metres. The micro-light illuminates the display for low-light readability, while the comfortable white resin strap is both lightweight and incredibly durable. Measuring 38.2mm × 35.2mm with an 8.5mm profile, this watch sits comfortably on any wrist size, adjustable from 145mm to 200mm.

Whether you're drawn to its minimalist aesthetic, its rich heritage in digital watchmaking, or simply its unbeatable value proposition, the F-91WB-7A represents everything that has made Casio a household name. It's equally at home on a weekend adventure as it is in a professional setting. This is the watch that accompanies you everywhere — dependable, unassuming, and always ready. Visit us at our Mall of the South boutique to experience this icon in person, or take advantage of our nationwide delivery service across South Africa. Should you ever need assistance with battery replacement or adjustments, our watch servicing and repairs team is always on hand to support you.

Specifications
  • Reference Number: F-91WB-7A
  • Brand: Casio
  • Movement: Japanese Quartz Digital
  • Case Diameter: 38.2mm
  • Case Width: 35.2mm
  • Case Thickness: 8.5mm
  • Case Material: Resin
  • Case Colour: White
  • Dial Colour: White
  • Display Type: Digital LCD
  • Strap Material: Resin
  • Strap Colour: White
  • Strap Size Range: 145mm to 200mm
  • Clasp Type: Buckle
  • Water Resistance: 30 metres (3 ATM)
  • Battery Life: Approximately 7 years
  • Functions: Digital time display, daily alarm, stopwatch/chronograph (59'59.99'' capacity), micro-light illumination
  • Chronograph Accuracy: 1/100 second
  • Chronograph Modes: Elapsed time, split time, 1st-2nd place timing
  • Gender: Unisex
  • Country of Origin: Japan (movement)
FAQ

Q: What is the battery life of the Casio F-91WB-7A?

A: The F-91WB-7A is equipped with an exceptionally long-lasting battery that provides approximately 7 years of continuous use under normal operating conditions. This is one of the standout features of Casio's F-91W series, making it one of the most economical and low-maintenance watches available.

Q: Is this watch suitable for swimming or showering?

A: The F-91WB-7A has a water resistance rating of 30 metres (3 ATM), which means it can withstand splashes, rain, and brief immersion in water. However, it is not designed for swimming, showering, or any water sports. We recommend removing the watch before these activities to preserve its longevity.

Q: How do I adjust the resin strap to fit my wrist?

A: The resin strap features multiple adjustment holes and a traditional buckle clasp, allowing you to easily find the perfect fit for wrist sizes ranging from 145mm to 200mm. Simply thread the strap through the buckle and select the hole that provides a comfortable, secure fit. Our team at Cassims & Co. is happy to assist with sizing adjustments if needed.

Q: What functions does the chronograph offer?

A: The stopwatch function on the F-91WB-7A measures elapsed time up to 59 minutes and 59.99 seconds with 1/100-second precision. It can record split times and 1st-2nd place timings, making it ideal for fitness activities, cooking, or any situation where accurate timing is required.

Q: Does this watch have a backlight?

A: Yes, the F-91WB-7A features a micro-light function that illuminates the digital display for visibility in low-light conditions. Simply press the designated button to activate the light, making it easy to read the time at night or in dimly lit environments.

Q: Is the Casio F-91WB-7A a genuine product with warranty coverage?

A: Absolutely. When you purchase from Cassims & Co., you receive a 100% authentic Casio watch backed by a 1-year international Casio warranty. We are an authorised Casio retailer, ensuring that your watch is genuine and fully supported by the manufacturer's warranty programme.

Q: What makes the white version different from the classic black F-91W?

A: The F-91WB-7A shares the same reliable Japanese quartz module, functionality, and iconic design as the legendary black F-91W, but features an all-white aesthetic that offers a lighter, more contemporary look. This makes it an excellent choice for those seeking the same legendary performance in a more versatile colourway that pairs well with any style.

Warranty
  • This watch is covered by a 1-year international Casio manufacturer's warranty from the date of purchase
  • The warranty is valid only when the watch is purchased from an authorised Casio retailer such as Cassims & Co.
  • The warranty covers manufacturing defects in materials and workmanship under normal use conditions
  • The warranty does not cover normal wear and tear, battery replacement, strap or buckle wear, scratches, or cosmetic deterioration
  • Water damage caused by misuse (exceeding the stated water resistance rating) is not covered under warranty
  • Damage resulting from accidents, improper use, unauthorised repairs, or modifications voids the warranty
  • To claim warranty service, the original proof of purchase from Cassims & Co. must be presented
  • Warranty service is provided by authorised Casio service centres — contact Cassims & Co. for assistance with warranty claims
  • This manufacturer's warranty is in addition to your statutory consumer rights under South African law
Care Guide
  • Wipe the case and resin strap regularly with a soft, dry cloth to remove dust, perspiration, and moisture
  • For deeper cleaning of the resin strap, use a slightly damp cloth with mild soap, then dry thoroughly
  • Avoid exposing the watch to extreme temperatures, direct sunlight for prolonged periods, or harsh chemicals including solvents, detergents, and perfumes
  • Although water-resistant to 30 metres, remove the watch before swimming, showering, or engaging in water sports to prevent damage
  • Do not operate the buttons or adjust the strap while the watch is wet
  • Store your Casio in a cool, dry place when not wearing it, away from magnetic fields and electronic devices
  • Battery replacement should be performed by a qualified watchmaker — contact Cassims & Co. when the display begins to dim
  • Avoid dropping or impacting the watch, as this may affect the internal module or crack the resin case
  • The resin material may naturally age over time with exposure to UV light; this is normal wear and does not affect functionality
  • If the watch will not be worn for an extended period, ensure it is stored in a dry environment to preserve the battery life
Why Buy From Cassim & Co.?
When you purchase the Casio F-91WB-7A from Cassims & Co., you're buying from an authorised Casio retailer, which means your watch comes with full manufacturer warranty protection and guaranteed authenticity. Our experienced team at Mall of the South, Johannesburg, provides comprehensive after-sales support including battery replacements, strap adjustments, and expert advice to ensure your watch serves you reliably for years. Whether you prefer to visit our boutique to experience this iconic timepiece in person or take advantage of our convenient nationwide delivery service across South Africa, we're committed to making your purchase seamless and fully supported.

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