Casio F-91WM Quartz Digital Alarm Chronograph Green Resin Watch (F-91WM-3ADF)
- Sale price
- R 449
- List price
- R 599
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The Casio F-91WM-3ADF reimagines the iconic F-91W digital watch with a distinctive military-inspired aesthetic. This quartz timepiece combines the legendary reliability of Casio's Module 593 movement with a bold green resin case and contrasting black resin strap, creating a contemporary take on a true classic that has defined accessible digital timekeeping for decades.
At 38.2mm across and just 8.5mm thin, this compact digital watch features an easy-to-read LCD display with alarm, chronograph, and dual time functions. The stopwatch measures up to 59 minutes and 59.99 seconds, whilst the daily alarm and hourly time signal ensure you stay punctual. Water resistance to 30 metres protects against splashes and brief immersion, whilst the long-life CR2016 battery delivers approximately seven years of reliable service between replacements.
At Cassim & Co., we are proud authorised retailers of CASIO watches, offering the full assurance of genuine timepieces backed by international warranty. Whether you're seeking a dependable everyday watch or a nostalgic callback to digital watch heritage with a modern twist, the F-91WM represents exceptional value and proven Casio quality.
Experience this icon in person at our Mall of the South boutique in Johannesburg, where our knowledgeable team can demonstrate its full functionality and assist with sizing. We offer nationwide delivery across South Africa, and our watch servicing and repairs centre provides expert battery replacements and technical support to keep your Casio performing flawlessly for years to come.
Specifications
- Reference: F-91WM-3ADF
- Movement: Quartz (Module 593)
- Case Diameter: 35.2mm
- Lug-to-Lug: 38.2mm
- Case Thickness: 8.5mm
- Case Material: Green resin
- Bezel Material: Green resin
- Strap/Bracelet: Black resin strap
- Dial: Digital LCD display
- Functions: Alarm, chronograph (stopwatch), hourly time signal, LED backlight, 12/24-hour format
- Stopwatch Capacity: 59'59.99"
- Water Resistance: 30 metres (3 ATM)
- Battery: CR2016
- Battery Life: Approximately 7 years
- Weight: 21g
- Origin: Japan (movement), assembled in various locations
FAQ
Q: Is this the same as the classic F-91W?
A: The F-91WM-3ADF shares the same legendary Module 593 quartz movement and functionality as the iconic F-91W, but features a distinctive green resin case paired with a black resin strap instead of the classic all-black design. All core functions—alarm, chronograph, LED backlight—remain identical.
Q: How long will the battery last?
A: The CR2016 battery provides approximately seven years of normal use. Battery replacement is straightforward and can be performed at our Mall of the South boutique or by any qualified watch technician.
Q: Can I swim or shower with this watch?
A: With 30-metre water resistance, the F-91WM is suitable for splashes, hand washing, and brief immersion, but it is not designed for swimming, showering, or water sports. We recommend removing the watch before any prolonged water exposure.
Q: How do I activate the backlight?
A: Press the upper-left button to illuminate the display with the LED backlight. The light remains on for approximately 1.5 seconds, making the watch readable in low-light conditions.
Q: Will this fit smaller or larger wrists?
A: The resin strap is adjustable and accommodates wrist sizes from approximately 14cm to 21cm. The compact 35.2mm case diameter makes this watch particularly suitable for smaller to medium-sized wrists, though it remains comfortable and proportionate on larger wrists as well.
Q: Does this come with an international warranty?
A: Yes, as an authorised Casio retailer, we provide a 1-year international Casio warranty covering manufacturing defects in materials and workmanship. The warranty is valid from the date of purchase.
Q: Is this a genuine Casio watch?
A: Absolutely. Cassim & Co. is an authorised Casio retailer, and every watch we sell is 100% genuine, sourced directly from official distribution channels. Your F-91WM comes with full manufacturer warranty and authenticity guarantee.
Warranty
- This watch is covered by a 1-year international Casio warranty from the date of purchase
- The warranty is valid only when the watch is purchased from an authorised Casio retailer such as Cassim & Co.
- Warranty coverage includes manufacturing defects in materials and workmanship under normal use
- The warranty does not cover normal wear and tear, including scratches, bracelet/strap wear, or cosmetic ageing
- Battery replacement is not covered under warranty, as batteries are consumable components
- Accidental damage, misuse, or unauthorised modification voids the warranty
- Water damage resulting from improper use (exceeding stated water resistance or operating buttons underwater) is not covered
- To claim warranty service, present your original proof of purchase from Cassim & Co.
- Warranty repairs must be performed by authorised Casio service centres to maintain validity
Care Guide
- Wipe the case and strap with a soft, dry cloth regularly to remove perspiration, moisture, and dirt
- For resin straps, occasional cleaning with mild soap and water (avoiding the case) helps maintain appearance—rinse thoroughly and dry completely
- Avoid exposure to solvents, detergents, perfumes, cosmetics, and chemicals which may discolour or damage resin components
- Do not press buttons when the watch is wet, as moisture may enter the case
- Store in a cool, dry place away from direct sunlight and magnetic fields when not in use
- Although water-resistant to 30 metres, avoid operating buttons underwater and remove the watch before swimming or showering
- Battery replacement should be performed by a qualified technician to maintain water resistance—visit our boutique for professional service
- If condensation appears under the crystal, have the watch inspected immediately by our servicing team
- With proper care, your Casio F-91WM will provide many years of accurate, reliable service