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Deal.ai › Casio › Mens Sport Watches
Casio
Casio G-Shock GA-2100-7A7 Tone-on-Tone Analog Digital Watch

Casio G-Shock GA-2100-7A7 Tone-on-Tone Analog Digital Watch

4.6(9 ratings)

Best price now

$91.47at Montres Big Time WatchesChecked 21 h ago

17% under what the other stores charge

Compared across 5 stores. Prices are checked against each store and labelled with when.

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Price facts

  • Last seen at $91.47 at Montres Big Time Watches on Nov 9.
  • Checked at 5 stores.

Our take on the Casio G-Shock GA-2100-7A7 Tone-on-Tone Analog Digital Watch

The GA-2100-7A7 is Casio's octagonal G-Shock, nicknamed the CasiOak for its resemblance to a far pricier luxury sports watch. It is unusually thin and light for a G-Shock at 11.8 mm and 51 g, thanks to the Carbon Core Guard case, and it pairs analog hands with a small digital window. It keeps the full G-Shock toolkit: 200 m water resistance, shock resistance, stopwatch, countdown timer, five alarms and a double LED light. It suits people who want a tough everyday watch with a distinctive look without the bulk of older G-Shocks. Against the classic square G-Shock it trades some legibility and battery life for a slimmer, more style-led design, and the all-white colorway shows dirt more than black versions.

Best forEveryday wear with casual and streetwear outfitsBuyers who want G-Shock toughness in a slim caseSmall and medium wrists that find older G-Shocks bulkyGift for a watch fan who likes the octagonal look
Pros
  • Thin (11.8 mm) and light (51 g) for a G-Shock
  • Carbon Core Guard case resists shocks
  • 200 m water resistance for swimming and showers
  • Analog hands plus digital display cover time, date and timers
  • Double LED light keeps the dial readable at night
  • Five alarms, 24-hour timer and 1/100-second stopwatch
Cons
  • Mineral glass scratches more easily than sapphire
  • Negative digital display is hard to read in low light
  • White resin band and case pick up stains and scuffs
  • No solar charging; battery needs replacing roughly every three years
  • Hands can obscure the small digital window at times

Casio G-Shock GA-2100-7A7 Tone-on-Tone Analog Digital Watch prices at every store

  • Montres Big Time WatchesNew

    In stockPriced in CAD (CA$129.00)Return policy

    $91.47Checked 21 h ago
    Visit Montres Big Time Watches
  • FeatureNew

    In stockReturn policy

    $110.00Checked 21 h ago
    Visit Feature
  • WalmartNew

    In stockSold by CW WATCHESReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.

    $125.28Free shippingChecked 21 h ago
    Visit Walmart
  • JaredNew

    Out of stock

    $110.00Free shippingChecked 21 h ago
    Visit Jared
  • CASIONew

    Out of stock

    $110.00Free shippingChecked 21 h ago
    Visit CASIO

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

Casio G-Shock GA-2100-7A7 Tone-on-Tone Analog Digital Watch price history

Lowest price we've seen: $110.00 on Nov 10 at CASIO. Tracked across 2 stores since Nov 10.

What reviewers say

Owners rate the GA-2100 line highly for its slim, comfortable fit and the octagonal design that looks more expensive than it is. Common complaints are the hard-to-read negative digital display and the white resin showing dirt.

What people mention
  • Size and weightPraisedOwners say it wears much slimmer and lighter than other G-Shocks and fits easily under a sleeve.
  • DesignPraisedThe octagonal bezel and white-on-white finish get frequent compliments for looking premium.
  • Display legibilityCriticisedThe negative LCD is dim, and the analog hands can cover it, making the digital readout hard to see.
  • DurabilityMixedThe case shrugs off knocks and water, but the white resin and mineral glass show stains and scratches.
  • BatteryMixedOwners accept the roughly three-year battery, though some wish it were solar like pricier G-Shocks.

From Feature

  • Octagonal G-Shock design in a thin, lightweight build
  • Resin case embedded with carbon fibers
  • White case and band with black accents
  • Dual analog and digital display
  • Mineral glass
  • Double LED light
Materials
Case: carbon/resin; band: resin; glass: mineral glass
Returns
Returns accepted only within 14 days of delivery; item must be unused with packaging intact; final sale items such as sale/clearance items and limited releases
Shipping
Orders processed within 24-48 hours and cannot be canceled once processing is complete; ground shipping 5-7 business days, two-day 2 business days, next day 1 b

About the Casio G-Shock GA-2100-7A7 Tone-on-Tone Analog Digital Watch

G-Shock is a Japanese watch brand by Casio renowned for its durable, shock-resistant designs and utilitarian innovation. The GA2100-7A reworks the original octagonal G-Shock in a thin, lightweight build made from resin embedded with carbon fibers. A white case and band with black accents, a dual analog and digital display, mineral glass and a double LED light complete the design.

Brand: G-Shock

Product Name: GA2100-7A

Category: Watches

Color: White/Black

Case Material: Carbon/Resin

Band: Resin

Glass: Mineral Glass

Water Resistance: 200M

Features: Dual analog/digital display, stopwatch, countdown timer, multi-function alarm, double LED light

Construction Notes: Shock resistant, Carbon Core Guard structure

Style Code: GA2100-7A

Specifications

color
WhiteSource
size
One SizeSource
Case size
48.5 × 45.4 × 11.8 mmSource
Weight
51 gSource
Case and bezel material

Questions and answers

Is the GA-2100-7A7 good for swimming?
Yes. It has 200 m water resistance, so swimming and showering are fine. Avoid pressing the buttons underwater.
How does it compare with the classic square G-Shock?
It is thinner and lighter and has analog hands, but the square models have clearer digital displays and some offer solar power.
Does it have solar charging?
No. It runs on two SR726W batteries, rated for about three years, and needs a battery change after that.
Will the white band get dirty?
White bio-based resin shows dirt and scuffs more than black. It can be cleaned with mild soap and water, but it will not stay bright forever.
What is in the box?
The watch, a manual and the standard G-Shock tin. No charger or extra band is included.
Is it too big for a small wrist?
The case is 45.4 mm wide, but at 11.8 mm thick and 51 g it sits flatter than most G-Shocks. The band fits wrists from 145 to 215 mm.
Where is the Casio G-Shock GA-2100-7A7 Tone-on-Tone Analog Digital Watch cheapest?
At Montres Big Time Watches, for $91.47, 17% under what the other stores charge, as of our latest check.
What do buyers say about the Casio G-Shock GA-2100-7A7 Tone-on-Tone Analog Digital Watch?
Rated 4.6 out of 5 from 9 ratings.
Where can I buy the Casio G-Shock GA-2100-7A7 Tone-on-Tone Analog Digital Watch?
5 stores we checked sell it, including Jared, CASIO, Montres Big Time Watches, Feature, Walmart.

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Carbon / Bio-based resin
Source
Band material
Bio-based resin bandSource
Water resistance
200-meter water resistanceSource
Battery life
Approx. battery life: 3 years on SR726W X 2Source
Glass
Mineral GlassSource
Compatible band size
145 to 215 mmSource
Stopwatch
1/100-second stopwatchSource
Timer
Countdown range: 24 hoursSource
Alarms
5 daily alarms; Hourly time signalSource
Light
Double LED lightSource