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Deal.ai › Casio › Wrist Watches
Casio
Casio G-Shock GA-2100-4A

Casio G-Shock GA-2100-4A

4.7(52 ratings)

Best price now

$110.00at JaredChecked 13 h ago

Compared across 6 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

  • Lowest price today: $110.00 at Jared (checked Nov 10, 2026).
  • Checked at 6 stores.
  • Our take on the Casio G-Shock GA-2100-4A

    The GA-2100-4A is the red version of Casio's "CasiOak" — a slim G-Shock with an octagonal bezel, analog hands over a digital display, and carbon core guard construction. At about 11.8 mm thick and 1.8 oz, it wears far closer to the wrist than classic square or chunky G-Shocks, while keeping 200 m water resistance, shock resistance and a full digital toolkit: world time, stopwatch, countdown timer, alarms and a date display. The trade-offs are a mineral crystal, no solar charging and no Bluetooth, which puts it below Casio's G-Shock Move and GBD lines on smart features but well above them on price and everyday wearability. It suits people who want a tough, colorful analog-digital beater that doesn't look oversized.

    Best forEveryday wear and casual outfitsSwimming, surfing and water sportsPeople with smaller wrists who find standard G-Shocks too bulkyFirst G-Shock or a colorful second watch
    Pros
    • Slim, light case that fits under a cuff
    • 200 m water resistance and shock resistance
    • Analog hands plus digital readout with world time, timer and stopwatch
    • Carbon core guard case keeps weight down
    • Luminous hands and markers for low light
    Cons
    • Mineral glass scratches more easily than sapphire
    • No solar charging or Bluetooth; battery replacement needed every few years
    • Negative or dark LCD variants can be hard to read at an angle
    • Red resin shows scuffs and fading over time
    • No countdown repeat or vibration alarm

    Casio G-Shock GA-2100-4A prices at every store

    • Kay JewelersNew

      In stock

      $110.00Free shippingChecked 13 h ago
      Visit Kay Jewelers
    • JaredNew

      In stock

      $110.00Free shippingChecked 13 h ago
      Visit Jared
    • KICKS CREWNew

      In stock

      $117.00+ $35.00 shippingChecked 13 h ago
      Visit KICKS CREW
    • FootshopNew

      In stock

      $122.95+ $65.00 shippingChecked 13 h ago
      Visit Footshop
    • House Of ScubaNew

      Out of stock

      $110.00Checked 13 h ago
      Visit House Of Scuba
    • CASIONew

      Out of stock

      $110.00Free shippingChecked 13 h ago
      Visit CASIO

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

    Casio G-Shock GA-2100-4A price history

    $110.00$110.00
    Nov 8Nov 10

    Lowest price we've seen: $110.00 on Nov 8 at Kay Jewelers. Tracked across 6 stores since Nov 8.

    What reviewers say

    • 4.7 / 552 ratings

    Owners rate it highly, calling it the best-looking G-Shock for the money and praising how light and slim it feels. Complaints center on legibility of the digital display and the mineral crystal picking up scratches.

    What people mention
    • Size and fitPraisedOwners say it wears much smaller than other G-Shocks and fits under a shirt cuff.
    • BuildPraisedBuyers report it shrugs off drops, scratches and pool water without issue.
    • Display legibilityMixedThe analog hands are clear, but some find the small digital window hard to read at an angle.
    • GlassCriticisedMineral crystal picks up scratches with everyday use, unlike sapphire on pricier models.
    • StrapMixedThe red resin strap is comfortable once broken in but feels stiff when new.

    About the Casio G-Shock GA-2100-4A

    This is a Casio watch which comes with a red strap. The watch face has a built-in date display.

    Specifications

    Color (Strap)
    RedSource
    Closure
    BuckleSource
    Glass
    MineralSource
    Watch Strap Material
    ResinSource
    Functions

    Questions and answers

    Is the GA-2100-4A good for swimming?
    Yes. It is rated to 20 ATM (200 m), so swimming, snorkeling and showering are fine. It is not a dive computer and the buttons should not be pressed underwater.
    How does it compare with the standard GA-2100?
    It is the same watch in a red colorway. Movement, size, water resistance and functions are identical, so choose on color rather than specs.
    Does it need a battery?
    Yes. It runs on a standard quartz battery, typically lasting around three years, and there is no solar charging like on G-Shock Tough Solar models.
    Is it too big for a small wrist?
    No. At roughly 45 mm across and under 12 mm thick, it is one of the slimmest G-Shocks and wears well on wrists that find larger models bulky.
    Does it have Bluetooth or app support?
    No. Time, alarms and world time are set with the buttons. If you want phone sync, look at the G-Shock Move or GBD-200 lines.
    What is in the box?
    The watch, a display box and paperwork. No spare strap or tools are included.
    Where is the Casio G-Shock GA-2100-4A cheapest?
    At Jared, for $110.00, as of our latest check.
    What do buyers say about the Casio G-Shock GA-2100-4A?
    Rated 4.7 out of 5 from 52 ratings.
    Where can I buy the Casio G-Shock GA-2100-4A?
    6 stores we checked sell it, including Kay Jewelers, Jared, House Of Scuba, CASIO, KICKS CREW.

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    Stores we've priced the Casio G-Shock GA-2100-4A at

    • Kay Jewelers deals and prices

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    Timer, Alarm, Date, Worldtimer, Luminous, StopwatchSource
    Gender
    MaleSource
    Series
    Casio G-Shock GA-2100, Casio G-ShockSource
    Case Color
    RedSource
    Movement Type
    QuartzSource
    Weight (oz)
    1.799Source
    Type of Index
    Index (without numbers)Source
    Display Type
    Digital, AnalogSource
    Dial Color
    RedSource
    Time Format
    12 Hours, 24 HoursSource
    Case Material
    ResinSource
    Water Protection
    20 ATM (200m)Source