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Round black resin digital watch with silver stainless steel case, 42.5mm

CASIO

CASIO W7531-AVCF 42.5mm Digital Watch Black Resin

SKU CH-C5TM-ZJNM7 MPN W7531-AVCF

A 42.5 mm digital sports watch with tide graph, moon phase data, 1/100-second stopwatch, countdown timer, four daily alarms plus snooze, dual time, auto LED light.

  • Size/Dimensions42.5mm
  • MovementQuartz (Battery)
  • ColorBlack
  • ShapeRound
  • DisplayDigital
  • Band MaterialResin
  • Moon age and phase shown for any day
  • 100 m water resistance suits swimming and surfing
  • Auto LED light with afterglow for night reading
  • 1/100 s stopwatch measures up to 99:59'59.99
  • 4 daily alarms plus snooze keep you on schedule

42.5mm Digital Sports Watch

The Casio W7531-AVCF is a unisex digital watch built around a 42.5mm stainless-steel case and a black resin band. It delivers tide-graph and moon-phase data alongside standard timekeeping, making it suited to coastal sports enthusiasts and everyday wearers who want quick environmental reference on the wrist.

Sustained-use reliability

Quartz movement powered by a CR2025 cell provides approximately ten years of operation before a battery change is needed. The module maintains an accuracy of plus or minus thirty seconds per month, and the 100-metre water-resistance rating holds up during repeated swimming or surf sessions without requiring extra sealing steps.

Pre-purchase checklist

Verify that the 42.5mm case diameter and 7-inch resin band length fit your wrist comfortably. Confirm that the tide-graph, moon-phase, dual-time and stopwatch functions match the specific timing and planning needs of your activity, as the watch does not offer GPS, heart-rate monitoring or smartphone synchronization.

Points forts

  • Moon age and phase shown for any day
  • 100 m water resistance suits swimming and surfing
  • Auto LED light with afterglow for night reading
  • 1/100 s stopwatch measures up to 99:59'59.99
  • 4 daily alarms plus snooze keep you on schedule

Caractéristiques

BrandCASIO
ModelW7531-AVCF
Size/Dimensions42.5mm
MovementQuartz (Battery)
ColorBlack
ShapeRound
DisplayDigital
Band MaterialResin
Band Length7
GenderUnisex
AgeAdult
ConditionNew
Case Diameter42.5mm
Case MaterialStainless Steel
Water-ResistantYes
Special FeaturesMoon Phase Tide Graph

Questions sur cet article

Does the CR2025 battery last through years of daily LED backlight use?

The CR2025 cell is rated for approximately ten years of operation, and the auto LED light with afterglow only activates when the wrist is tilted, so normal daily use stays well within that lifespan.

What strap size or tool is needed to fit the 42.5mm case to a 7-inch wrist?

The resin band is supplied at a 7-inch length with a standard tang buckle; no tools are required — simply choose the hole that fits and fasten.

Will the tide graph and moon-phase data stay accurate if I keep my older analogue dive watch as a backup?

Yes — the module 2926 calculates tide graphs and moon age independently using its pre-programmed calendar valid until 2039, so the digital watch remains accurate regardless of any other timepiece you wear.

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