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Black resin round case with analog digital dial and resin strap

CASIO

CASIO G-Shock GA-100-1A2DR analog digital watch

SKU CH-DN68-ZEZHQ

A shock and magnetic resistant analog-digital sports watch with world time across 29 zones, 1/1000-second stopwatch, speed measurement and five daily alarms

  • Watch movementQuartz
  • AdjustabilityRound
  • Metal typeResin
  • GemstoneDate
  • Stone cut grade200M
  • Product shapeRound
  • Shock-resistant G-Shock construction survives heavy impacts
  • Magnetic-resistant movement keeps time near strong fields
  • 29 world-time zones across 48 cities for global travel
  • 1/1000-second stopwatch with speed and distance modes
  • Two-year battery life on a single CR1220 cell

CASIO G-Shock GA-100-1A2DR for sports timing

This new analog digital watch combines a 2-hand dial with a digital display for sports use. The resin case measures 55.0 X 51.2 X 16.9 mm and weighs 70 g. Quartz movement delivers ±15 seconds per month accuracy. A CR1220 battery provides approx. 2 years of life. Shock and magnetic resistance suit active wear.

200M water resistance and stopwatch limits

Water resistance is rated to 200M for swimming and surface activities. The 1/1000-second stopwatch measures up to 99:59'59.999'' in elapsed, lap and split modes. Speed calculation accepts 0 to 1998 units per hour with distance input of 0.0 to 99.9. The Mach indicator flags speeds exceeding 1225 units per hour.

Upgrades from basic digital watches

This model adds world time across 29 zones covering 48 cities plus UTC, plus five daily alarms with snooze and hourly signal. The auto LED light with afterglow improves low-light readability. Buyers needing heart-rate monitoring, GPS tracking or smartphone notifications will not find those functions here.

How it compares

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

Price $87.99
Cheaper than about 62% of the 2,679 comparable items (median $130.99).

Specifications

Product
Brand nameCASIO
Design styleSports
Watch face colorAnalog Digital
Item conditionNew
Display
Display typeAnalog Digital
Size & build
Main materialResin
Metal typeResin
GemstoneDate
Stone cut grade200M
Product shapeRound
Strap materialResin
Strap lengthMale
Closure typeBuckle Clasp
Bezel typeFixed Bezel
Case sizeResin
Housing materialResin
Watch glassMineral Crystal
Environment & compliance
Water resistance200m
More details
Watch movementQuartz
AdjustabilityRound
Dial markingsIndex
Date displayDate
Suitable forMale
Age groupResin
Alarm functionNew
AltimeterMineral Crystal
Heart rate monitorFixed Bezel
Indications & functionsIndex

Questions about this item

Which version of the GA-100 should I choose for a standard men's fit?

The GA-100 case measures 55.0 X 51.2 X 16.9 mm and weighs 70 g, designed for male sizing with a resin band and buckle clasp.

What does the 200M water resistance rating mean for daily use?

The 200M rating indicates suitability for professional marine activity and serious surface water sports, not just splash resistance.

How does the world time function handle different zones?

It covers 29 time zones across 48 cities plus coordinated universal time, with daylight saving on/off and home/world city swapping.

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