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Deal.ai › Casio › Wrist Watches
Casio
Casio G-Shock GA-100-1A4

Casio G-Shock GA-100-1A4

4.9(573 ratings)

Best price now

$73.00at JomashopChecked 3 h ago

39% under what the other stores charge

Compared across 10 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.

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Price facts

  • Last seen at $73.00 at Jomashop on Nov 10.
  • Checked at 10 stores.

Our take on the Casio G-Shock GA-100-1A4

The GA-100-1A4 is a large, twin-hand analog-digital G-Shock built for rough use. It pairs a 200m water rating and shock-resistant resin case with a stopwatch, countdown timer, world time, alarms and a tachometer, so it covers timing needs a basic digital watch skips. The chunky case and busy dial suit people who want a tough everyday or sports watch and don't mind the size; it is heavier and bulkier than slim G-Shock models like the DW-5600. Owners rate it highly for durability and value, though some find the analog hands hard to read at a glance and the manual thick.

Best forRough everyday wear and outdoor workSports, gym and swimming (200m rated)Buyers who want analog hands plus digital dataGift for someone who likes big, bold watches
Pros
  • Shock-resistant resin case and mineral glass
  • 200m water resistance for swimming and showering
  • Analog and digital displays together
  • Stopwatch, countdown timer, world time and multiple alarms
  • Perpetual calendar and tachometer
Cons
  • Large, thick case that catches on sleeves
  • About 2.5 oz, heavy for a resin watch
  • Busy dial and small digital windows are hard to read in low light
  • No solar charging; runs on a CR1220 cell
  • Setting functions through the four buttons takes practice

Casio G-Shock GA-100-1A4 prices at every store

  • JomashopNew

    In stock

    $73.00+ $5.99 shippingChecked 3 h ago
    Visit Jomashop
  • CreationWatchesNew

    In stock

    $91.00+ $8.00 shippingChecked 3 h ago
    Visit CreationWatches
  • NeweggNew

    In stock

    $100.49Free shippingChecked 3 h ago
    Visit Newegg
  • Best BuyNew

    In stock

    $119.00Free shippingChecked 3 h ago
    Visit Best Buy
  • CASIONew

    In stock

    $120.00Free shippingChecked 3 h ago
    Visit CASIO
  • Shop SimonNew

    In stock

    $119.00+ $4.95 shippingChecked 3 h ago
    Visit Shop Simon
  • KICKS CREWNew

    In stock

    $107.64+ $35.00 shippingChecked 3 h ago
    Visit KICKS CREW
  • First Class WatchesNew

    In stock

    $145.00Free shippingChecked 3 h ago
    Visit First Class Watches
  • GrailedNew

    In stock

    $147.00+ $6.99 shippingChecked 3 h ago
    Visit Grailed
  • FootshopNew

    In stock

    $122.95+ $65.00 shippingChecked 3 h ago
    Visit Footshop

Store links may earn us a commission. Some prices via Klarna.

Casio G-Shock GA-100-1A4 price history

Lowest price we've seen: $73.00 on Nov 11 at Jomashop. Tracked across 10 stores since Nov 11.

What reviewers say

  • 4.9 / 5573 ratings

Owners rate it very highly, mostly for surviving knocks, water and daily abuse. Complaints center on size, weight and legibility rather than reliability.

What people mention
  • BuildPraisedOwners say it shrugs off drops, scrapes and daily abuse.
  • Water resistancePraisedBuyers report swimming and showering without issues.
  • SizeCriticisedMany find the case large and thick, especially on smaller wrists.
  • WeightMixedSome accept the heft as part of the tough build; others find it heavy for all-day wear.
  • LegibilityCriticisedThe busy dial and small digital windows are hard to read in low light.
  • SetupMixedOwners say the four-button controls and manual take time to learn.

About the Casio G-Shock GA-100-1A4

The Casio G-Shock GA-100-1A4 is a men's quartz watch with both analog and digital displays. It has a black dial with index markers without numbers, and the face is covered by mineral glass.

The case is made of black resin, and the black resin strap closes with a buckle. The watch is water resistant to 20 ATM (200 m).

Functions include a timer, tachometer, world time, chronograph, stopwatch, alarm, perpetual calendar and date. The time can be shown in 12-hour or 24-hour format.

Series
Casio G-Shock
Movement
Quartz
Display
Digital and analog
Case material
Resin, black
Strap
Black resin, buckle closure
Glass
Mineral
Dial
Black, index without numbers
Water resistance
20 ATM (200 m)
Battery
CR1220
Weight
2.469 oz

Specifications

Color (Strap)
BlackSource
Closure
BuckleSource
Glass
MineralSource
Watch Strap Material
ResinSource
Gender

Questions and answers

Is the GA-100 good for swimming?
Yes. It is rated to 20 ATM (200m), which covers swimming and showering. It is not a dive computer, so don't rely on it for depth timing.
How does it compare with the DW-5600?
The GA-100 is bigger, heavier and adds analog hands, a tachometer and a busier dial. The DW-5600 is smaller, lighter and simpler to read.
Does it need a battery?
Yes. It runs on a CR1220 cell and is not solar-powered, so the battery needs replacing every few years.
Can I wear it with a suit?
It works as a casual watch, but the thick resin case and bold dial look sporty rather than dressy.
What is in the box?
The watch, a CR1220 battery already fitted, and the instruction manual. No charger or extra strap is included.
Is the glass scratch resistant?
The mineral glass resists light scratches, but it is not sapphire, so deep scuffs are possible with hard contact.
Where is the Casio G-Shock GA-100-1A4 cheapest?
At Jomashop, for $73.00, 39% under what the other stores charge, as of our latest check.
What do buyers say about the Casio G-Shock GA-100-1A4?
Rated 4.9 out of 5 from 573 ratings.
Where can I buy the Casio G-Shock GA-100-1A4?
10 stores we checked sell it, including Jomashop, CreationWatches, Newegg, KICKS CREW, Shop Simon.

Stores we've priced the Casio G-Shock GA-100-1A4 at

  • Best Buy deals and prices
  • Newegg deals and prices

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MaleSource
Battery Type
CR1220Source
Case Color
BlackSource
Series
Casio G-ShockSource
Weight (oz)
2.469Source
Movement Type
QuartzSource
Type of Index
Index (without numbers)Source
Display Type
Digital, AnalogSource
Dial Color
BlackSource
Time Format
12 Hours, 24 HoursSource
Case Material
ResinSource
Water Protection
20 ATM (200m)Source