We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Silver stainless steel digital watch with link bracelet, rectangular case, 38.9 by 35 by 9.4 mm

CASIO

CASIO B640WD-1AV Digital Stainless Steel Watch

SKU CH-K588-BQWY7

Stainless steel digital watch with micro light, alarm and calendar, water resistant to 50 metres

  • Watch movementQuartz
  • Strap length7
  • Item conditionNew
  • Housing materialStainless Steel
  • Design styleFashion
  • Main materialStainless Steel
  • Stainless steel case and band resist daily wear
  • 50 m water resistance suits swimming and rain
  • Quartz movement keeps accurate time with low maintenance
  • Micro light illuminates display in dark conditions
  • Alarm and calendar functions organise your schedule

Classic digital watch for everyday wear

The Casio B640WD-1AV is a quartz timepiece built with a stainless steel case and matching link band. It suits adults who want a straightforward silver watch that fits a 7-inch wrist and resists water to 50 metres. The 38.9 × 35 × 9.4 mm case sits flat under a cuff and the mineral crystal resists daily scratches.

Thermals noise and power draw in normal use

A battery-driven quartz movement means there is no heat, no fan noise and no power draw from a mains supply. The watch runs continuously until the cell needs replacement, so it adds nothing to your electricity usage and stays silent in quiet rooms.

Micro light alarm and calendar functions

The built-in micro light illuminates the digital dial for reading in darkness without an external source. A daily alarm, full auto-calendar and date display replace a separate reminder device, while the original box and booklet let you set each feature immediately.

How it compares

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

Price $40.99
Cheaper than about 82% of the 2,679 comparable items (median $130.99).

Specifications

Product
Brand nameCASIO
Design styleFashion
Product colorSilver
Item conditionNew
Size & build
Main materialStainless Steel
Size adjustmentYes
Strap length7
Housing materialStainless Steel
Environment & compliance
Water resistanceYes
More details
Watch movementQuartz
AdjustabilityYes
Suitable forMale
Age groupAdult

Questions about this item

How do I adjust the stainless steel link band on the B640WD-1AV, and which step is often missed?

Use a pin pusher or small screwdriver to remove links until the band fits your wrist; the step many skip is re-inserting the pins in the correct direction so they sit flush and do not work loose.

What maintenance will the watch need after a few years of daily wear?

The quartz movement runs on a single battery that typically lasts several years; when the display dims or the alarm weakens, have a watchmaker replace the cell and renew the 5 ATM water-resistance seals.

What is the first limit I will hit if I keep the watch submerged at its rated depth?

The 5 ATM rating covers static pressure to 50 metres; sustained swimming or diving can exceed that limit, so treat it as splash and brief immersion protection rather than continuous underwater use.

More in Analog & Digital Wristwatches

Similar items