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Black resin digital watch with rectangular case and rubber strap

CASIO

CASIO F-105W-1 Digital Watch

SKU CH-5M9E-Z402Z MPN F-105W-1

A lightweight digital watch with 1/100-second stopwatch, daily alarm, EL backlight and 7-year battery life

  • MaterialResin
  • MovementQuartz
  • ColorBlack
  • DisplayDigital
  • Band MaterialRubber
  • GenderMale
  • Lightweight 27 g resin case for comfortable daily wear
  • Water resistant construction suits swimming and showering
  • 1/100 second stopwatch measures up to 23'59.99" with split timing
  • EL backlight illuminates display for clear night reading
  • 7 year battery life from a single CR2016 cell

Everyday Digital Watch

The Casio F-105W-1 is a quartz digital watch built for daily wear. Its resin case and rubber band keep the weight low at 27 grams. A clean black finish suits casual and workplace settings alike. The module 1275 movement delivers core timekeeping functions without unnecessary complexity.

Long Battery Life

A single CR2016 cell powers the watch for approximately seven years under normal use. The EL backlight illuminates the display on demand rather than running constantly, helping to preserve that runtime. Accuracy is rated within 30 seconds per month, so the watch stays reliable between battery changes. No charging cable or proprietary dock is required.

Compact Wrist Fit

The case measures 37.5 by 33.5 by 9.5 millimetres, allowing it to slide under shirt cuffs easily. Water resistance handles hand-washing, rain and surface splashes without issue. The stopwatch captures net, split and 1st-2nd place times up to 23 minutes 59.99 seconds in 1/100 second increments. Buyers needing swim-depth ratings or GPS tracking should consider a dedicated sports model.

Highlights

  • Lightweight 27 g resin case for comfortable daily wear
  • Water resistant construction suits swimming and showering
  • 1/100 second stopwatch measures up to 23'59.99" with split timing
  • EL backlight illuminates display for clear night reading
  • 7 year battery life from a single CR2016 cell

Specifications

BrandCASIO
ModelF-105W-1
MaterialResin
MovementQuartz
ColorBlack
DisplayDigital
Band MaterialRubber
GenderMale
AgeAdult
ConditionNew
Water-ResistantYes
AlarmYes

Questions about this item

How do I set the time and what step do people often miss?

Use the four side buttons to enter the time-setting mode, adjust each field, then press the mode button again to exit; the step people miss is confirming the exit so the new time is saved.

When will the CR2016 battery need replacing?

The CR2016 cell lasts about 7 years; after that the display dims and alarms stop, so replace the battery to restore full function.

What is the longest single interval the stopwatch can measure?

The stopwatch measures up to 23 minutes 59.99 seconds; longer intervals require manual tracking.

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