Casio Retro B640WB Digital Quartz Black Ion Plated Stainless Steel Watch (B640WB-1ADF)
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- Authorised dealer
- Full manufacturer warranty
- Serviced in-house
- Secure checkout
Description
The Casio B640WB-1ADF reimagines the brand's iconic digital aesthetic with a contemporary all-black finish. This quartz-powered timepiece features a rectangular 35mm case crafted from black ion-plated stainless steel, housing a high-contrast digital display beneath a protective mineral crystal. The matching black ion-plated stainless steel bracelet delivers exceptional wrist presence while maintaining the vintage-inspired silhouette that has made Casio's retro collection a staple among collectors and style-conscious wearers alike.
Functionality meets form with an integrated LED backlight that illuminates the digital display at the press of a button, ensuring legibility in any lighting condition. A 1/100-second stopwatch provides precise timing capabilities, while the countdown timer and daily alarm expand the watch's utility for everyday wear. Water resistance to 50 metres (5 bar) offers protection during handwashing and light water exposure, making this a genuinely practical choice for modern life.
At Cassims & Co., we are proud to offer the full range of CASIO watches as authorised retailers, ensuring every timepiece is backed by genuine manufacturer warranty and full after-sales support. The B640WB-1ADF's monochromatic design makes it exceptionally versatile—equally at home paired with tailored workwear or weekend casual attire. The ion-plated finish provides enhanced durability compared to standard coatings, resisting everyday wear while maintaining its matte black aesthetic.
This unisex design suits wrists of all sizes, with the lightweight 49-gram construction ensuring all-day comfort. The mineral crystal dial window guards against scratches during daily wear, while the secure fold-over clasp keeps the watch firmly in place. Whether you're timing your morning run with the stopwatch or simply checking the hour, the crisp segmented LCD delivers instant readability.
Visit us at our Mall of the South boutique in Johannesburg to experience the B640WB-1ADF in person, or take advantage of our nationwide delivery service. Our watch servicing and repairs team is always available to assist with battery replacements, bracelet adjustments, and any after-sales care your Casio may require over the years ahead.
Specifications
- Brand: Casio
- Model: B640WB-1ADF
- Case Shape: Rectangular
- Case Diameter: 35mm
- Case Thickness: 9.4mm
- Case Material: Black ion-plated stainless steel
- Dial Type: Digital LCD
- Crystal: Mineral crystal
- Band Material: Black ion-plated stainless steel bracelet
- Clasp Type: Fold-over clasp
- Movement: Quartz digital
- Water Resistance: 50m (5 bar)
- Functions: LED backlight, 1/100-second stopwatch, countdown timer, daily alarm
- Weight: 49g
- Gender: Unisex
FAQ
Q: Is the B640WB-1ADF suitable for both men and women?
A: Yes, this is a unisex design with a 35mm rectangular case that suits a wide range of wrist sizes. The classic retro styling and neutral black finish make it an ideal choice regardless of gender.
Q: Can I swim or shower while wearing this watch?
A: The B640WB-1ADF has 50-metre water resistance, which protects it during handwashing, rain exposure, and light splashing. However, it is not designed for swimming, showering, or water sports—the pushers should never be operated while the watch is wet.
Q: How do I activate the LED backlight?
A: Press the dedicated LIGHT button on the upper right side of the case. The LED illuminates the entire digital display for several seconds, providing clear visibility in low-light conditions.
Q: What type of battery does this watch use and how long does it last?
A: The B640WB uses a standard CR2016 battery. With typical use, battery life is approximately 2-3 years. Our servicing team can replace the battery and pressure-test the watch to maintain water resistance.
Q: Will the black ion plating wear off over time?
A: Black ion plating is significantly more durable than standard coatings and resists everyday wear exceptionally well. With proper care—avoiding hard impacts and abrasive materials—the finish will maintain its appearance for many years.
Q: Can the bracelet be adjusted to fit my wrist?
A: Yes, the stainless steel bracelet features removable links for precise sizing. Our team can adjust the bracelet for you at the time of purchase or any time thereafter.
Q: Does this watch come with the manufacturer's warranty?
A: Yes, when purchased from Cassims & Co. as an authorised Casio retailer, this watch carries the full 1-year international Casio warranty covering manufacturing defects.
Warranty
- This watch carries a 1-year international Casio warranty from the date of purchase, valid when purchased from an authorised 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, scratches to the crystal or case, strap or bracelet wear, or water damage resulting from misuse or failure to observe water resistance limitations.
- Accidental damage, damage from improper handling, unauthorised repairs or modifications, and cosmetic deterioration are excluded from warranty coverage.
- To make a warranty claim, the original proof of purchase from an authorised retailer must be presented.
- Warranty service is provided through Casio's authorised service network—contact our team for assistance with any warranty matters.
Care guide
- Wipe the case and bracelet regularly with a soft, lint-free cloth to remove dust, perspiration, and moisture.
- Avoid exposing the watch to extreme temperatures, direct sunlight for prolonged periods, or strong magnetic fields.
- Do not operate the pushers or crown while the watch is wet or submerged, as this can compromise water resistance.
- Remove the watch before showering, swimming, or engaging in water sports—the 50m rating is for splash resistance only.
- Have the battery replaced promptly when the display dims, and request a pressure test to verify water resistance after each battery change.
- Store the watch in a cool, dry place away from chemicals, solvents, and harsh cleaning agents that may damage the ion-plated finish.
- If the bracelet becomes soiled, clean it gently with a soft brush, mild soap, and water, then dry thoroughly with a soft cloth.
Why buy from Cassims & Co.?
Authorised. Authentic. Serviced here.
Authorised retailer
Every watch we sell comes from the brand or its official South African distributor, with the manufacturer's warranty registered to you. No grey imports, no parallel stock.
Set up before it leaves
Bracelet sized to your wrist, date and time set, warranty card stamped, in store or before dispatch.
In-house watchmakers
Battery changes, bracelet links, pressure tests and full services at our own Johannesburg service centre, so your warranty service never leaves the city.
Price-beat promise
Find the identical model in stock at a lower listed price from another authorised SA retailer and we'll match it.
Nationwide delivery
Tracked courier anywhere in South Africa, free over R3,000. Or collect at Mall of the South or Greenstone.
Delivery & returns
Tracked courier delivery across South Africa in 1–3 working days; free on orders over R3,000. Collect in store at Mall of the South or Greenstone Shopping Centre at no charge.
See our shipping policy and refund policy for full details.
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