StoreDeal.ai store
Shop
  • Deals
  • Deal checker
  • Black Friday
  • Buying guides
  • Brands
  • Stores
Travel
  • Flight deals
  • Hotel deals
Company
  • Research
  • Press
  • Use in AI assistants
  • Contact
  • deal.ai apps
Black Friday 2026
  • Walmart
  • Best Buy
  • Target
  • TVs
  • Laptops
  • Headphones
  • Apple
  • Gaming
  • Vacuums
  • Kitchen
  • Toys
  • Smartwatches
  • Tablets
  • Furniture
  • Mattresses
© Deal.ai Inc.·2222 Ponce de Leon Blvd, Miami, FL 33134·support@deal.ai
TermsPrivacy
Deal.ai › Casio
Casio
G-Shock GA2100-4A Men's Watch
Casio

G-Shock GA2100-4A Men's Watch

4.7(7 ratings)

Best price now

$84.38at Montres Big Time WatchesChecked Nov 9

Prices are checked against each store and labelled with when.

Visit Montres Big Time Watches

Ask our agent about this product

It checks today's price at every store, compares the alternatives and answers in about a minute.

Enter to send, Shift+Enter for a new line

Price facts

  • Last seen at $84.38 at Montres Big Time Watches on Nov 9.

Our take on the G-Shock GA2100-4A Men's Watch

The Casio G-Shock GA2100-4A is a men's analog-digital watch from the GA-2100 series, known for its octagonal bezel inspired by the original DW-5000C. It features a carbon core guard structure and a thin 11.8mm case, making it one of the slimmest G-Shock combination models. With 200-meter water resistance, shock resistance, and a double LED light, it suits those who want a tough, stylish everyday watch. Compared to other G-Shocks, it offers a more streamlined profile and analog-digital display, though some users find the negative display hard to read in low light.

Best forEveryday wearOutdoor activitiesFans of retro-modern designThose wanting a slim G-Shock
Pros
  • Slim 11.8mm case for a G-Shock
  • Carbon core guard for strength
  • 200-meter water resistance
  • Double LED light with afterglow
  • World time with 31 time zones
Cons
  • Negative display can be hard to read
  • Resin band may feel stiff initially
  • No solar power

G-Shock GA2100-4A Men's Watch prices at every store

  • Montres Big Time WatchesNew

    In stockShips from Canada · priced in CAD (CA$119.00) · duties may applyReturn policy

    $84.38Checked Nov 9
    Visit Montres Big Time Watches

What reviewers say

Reviewers praise the GA2100-4A for its slim profile, rugged build, and stylish octagonal design. Many appreciate the analog-digital combo and water resistance, but some criticize the negative display's legibility and the band's comfort.

What people mention
  • Display legibilityCriticisedThe negative display is often found difficult to read in low light.
  • Build qualityPraisedOwners appreciate the carbon core guard and overall toughness.
  • ComfortMixedSome find the resin band stiff at first, though it softens over time.
  • DesignPraisedThe octagonal bezel and slim profile are frequently complimented.
  • FeaturesMixedWhile world time and LED light are useful, some miss solar power.

About the G-Shock GA2100-4A Men's Watch

The G-Shock GA2100-4A is an analog-digital watch with an octagonal case, a shape taken from the original DW-5000C of 1983. The case is 11.8 mm thin, the thinnest among G-Shock combination models.

The case and bezel are made of high-strength resin reinforced with carbon fibers. A carbon core guard structure encloses the module in a carbon case for strength and crack resistance. The watch is shock resistant and water resistant to 200 meters. It has a mineral glass crystal and a resin band.

Two LED lights illuminate the face and the digital display. Both have a Super Illuminator and afterglow, and the duration can be set to 1.5 or 3 seconds. The watch also has world time, a 1/100-second stopwatch, a countdown timer, 5 daily alarms and an hourly time signal.

Case size
48.5 x 45.4 x 11.8 mm
Weight
51 g
Case/bezel
Carbon / resin
Band
Resin
Glass
Mineral glass
Water resistance
200 meters
Shock resistance
Yes
Display
Analog-digital
Analog timekeeping
2 hands (hour, minute; the minute hand moves every 20 seconds), 1 day dial
Digital timekeeping
Hour, minute, second, pm, month, date
Time format
12/24-hour
Calendar
Full auto-calendar to year 2099
Lighting
Double LED light (white): face light and digital display backlight, Super Illuminator, 1.5 or 3 second duration, afterglow

Questions and answers

Is the GA2100-4A good for everyday wear?
Yes, its slim case and tough build make it suitable for daily use. The analog-digital display and 200-meter water resistance add practicality.
How does it compare to other G-Shock models?
It is thinner and lighter than many other G-Shocks, with a more streamlined design. However, it lacks solar power and some advanced features found in higher-end models.
Is the display easy to read?
The analog hands are clear, but the negative digital display can be hard to read in low light. The LED backlight helps in dark conditions.
Does it have a stopwatch and timer?
Yes, it includes a 1/100-second stopwatch and a countdown timer, along with other standard G-Shock functions.
What is the water resistance rating?
It is rated for 200-meter water resistance, suitable for swimming and diving.
Is the band replaceable?
Yes, the resin band can be replaced with another compatible band, though original replacements are recommended.
Where is the G-Shock GA2100-4A Men's Watch cheapest?
At Montres Big Time Watches, for $84.38, as of our latest check.
What do buyers say about the G-Shock GA2100-4A Men's Watch?
Rated 4.7 out of 5 from 7 ratings.

More from Casio

  • C
    Casio G-Shock GA-2100WS-7AER
    Casio G-Shock GA-2100WS-7AER
  • G
    G-Shock Standard GA-2100-4ADR
    G-Shock Standard GA-2100-4ADR
  • C
    Casio G-Shock Black Green Analog Digital Watch GA-2100K-1AER
    Casio G-Shock Black Green Analog Digital Watch GA-2100K-1AER
  • C
    Casio G-Shock Analog Digital Resin Strap Black Dial Quartz GA-2100K-2A 200M Men's Watch
    Casio G-Shock Analog Digital Resin Strap Black Dial Quartz GA-2100K-2A 200M Men's Watch
  • C
    Casio G-Shock GA-2100 Series 'White' GA-2100-7A7
    Casio G-Shock GA-2100 Series 'White' GA-2100-7A7
  • A
    ANALOG-DIGITAL 2100 Series GA-2100-7AJF
World time
31 time zones (48 cities + UTC), daylight saving on/off, home city/world time city swapping
Stopwatch
1/100 second for the first 60 minutes, then 1 second; measures up to 23:59'59''; elapsed time, split time, 1st-2nd place times
Countdown timer
Measuring unit 1 second; range 24 hours; start time set from 1 second to 24 hours in 1-second, 1-minute and 1-hour increments
Alarms
5 daily alarms
Other functions
Hourly time signal, hand shift feature, button operation tone on/off
Accuracy
±15 seconds per month
Battery
2 x SR726W, approx. 3 years
ANALOG-DIGITAL 2100 Series GA-2100-7AJF
  • C
    Casio G-Shock Analog Digital Bio-Based Resin Strap Multicolor Dial Quartz GA-2100RW-1A 200M Men's Watch
    Casio G-Shock Analog Digital Bio-Based Resin Strap Multicolor Dial Quartz GA-2100RW-1A 200M Men's Watch
  • G
    G-Shock GA2100-1A1 Men's Watch
    G-Shock GA2100-1A1 Men's Watch
  • All Casio deals and products →

    More men's analog-digital watches

    • C
      Casio G-Shock Analog Digital Resin Strap Black Dial Quartz GA-2100K-5A 200M Men's Watch
      Casio G-Shock Analog Digital Resin Strap Black Dial Quartz GA-2100K-5A 200M Men's Watch
    • C
      Casio G-Shock GA-2100-7AER rannekello
      Casio G-Shock GA-2100-7AER rannekello
    • C
      Casio G-Shock Analog-Digital 'Red' GA-2100-4APR
      Casio G-Shock Analog-Digital 'Red' GA-2100-4APR
    • C
      Casio G-Shock GA-2100 Series Analog-Digital Watch GA2100-1A1
      Casio G-Shock GA-2100 Series Analog-Digital Watch GA2100-1A1
    • C
      Casio G-Shock 2100 Black Gold GA2100GB-1A
      Casio G-Shock 2100 Black Gold GA2100GB-1A
    • C
      Casio G-SHOCK GA-2100 Series
      Casio G-SHOCK GA-2100 Series
    • G
      G-Shock Standard GA-2100-1A2DR
      G-Shock Standard GA-2100-1A2DR
    • C
      Casio Men's G-Shock GA-2100 Series GA-2100-7AJF
      Casio Men's G-Shock GA-2100 Series GA-2100-7AJF