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
Casio G-Shock Analog Digital Men's Casual Watch Series GA2100-1A1

Casio G-Shock Analog Digital Men's Casual Watch Series GA2100-1A1

4.8(270 ratings)

Best price now

$95.00at Tempus ShopChecked Nov 9

15% under what the other stores charge

Compared across 6 stores. Prices are checked against each store and labelled with when.

Visit Tempus Shop

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 $95.00 at Tempus Shop on Nov 9.
  • Checked at 6 stores.

Our take on the Casio G-Shock Analog Digital Men's Casual Watch Series GA2100-1A1

The GA2100-1A1 is the all-black version of Casio's 2100 Series, the slimmest analog-digital G-Shock. It pairs an octagonal carbon-core case with a resin band, 200 m water resistance, 48-city world time and a 1/100-second stopwatch. Its thin profile and clean dial make it the pick for people who want G-Shock toughness without the bulky look of a classic 5600 or Mudman. Owners rate it highly for the light, comfortable fit and the analog hands that stay readable at a glance.

Best forEveryday wear with casual clothesTravelers crossing time zonesPeople who want a tough watch that stays slim on the wristFirst G-Shock buyers
Pros
  • Slim, light carbon-core case sits flat on the wrist
  • 200 m water resistance for swimming and showering
  • World time across 48 cities and UTC
  • Analog hands plus a digital window for quick reading
  • 1/100-second stopwatch and countdown timer
Cons
  • Negative LCD display is dim in low light
  • Hands can obscure the digital window at some times
  • Resin band attracts dust and lint
  • No solar charging or Bluetooth on this model

Casio G-Shock Analog Digital Men's Casual Watch Series GA2100-1A1 prices at every store

  • Bijoux EcloreNew

    In stockShips from Canada · duties may applyReturn policy

    $84.00Checked Nov 11
    Visit Bijoux Eclore
  • Tempus ShopNew

    In stockReturn policy

    $95.00Checked Nov 9
    Visit Tempus Shop
  • Gem BijouNew

    In stockReturn policy

    $108.00Checked Nov 9
    Visit Gem Bijou
  • DailyWatchNew

    In stockReturn policy

    $112.00Checked Nov 9
    Visit DailyWatch
  • Starcow ParisNew

    In stockReturn policy

    $114.00Checked Nov 9
    Visit Starcow Paris
  • KlukkanNew

    In stockShips from Iceland · priced in ISK (ISK 28,990) · duties may applyReturn policy

    $237.20Checked Nov 9
    Visit Klukkan

What reviewers say

  • 4.8 / 5270 ratings

Owners rate the GA2100-1A1 very highly, praising its slim fit, light weight and clean all-black look. Complaints center on the dark negative display and the resin band.

What people mention
  • Size and fitPraisedOwners say the thin case sits comfortably and fits under a shirt cuff.
  • DisplayMixedThe analog hands read easily, but the negative LCD is dim in low light.
  • BuildPraisedBuyers describe it as solid and light at the same time, with no rattle.
  • BandCriticisedThe resin band is said to collect dust and lint.
  • LegibilityMixedSome owners note the hands can cover the digital window at certain times.

About the Casio G-Shock Analog Digital Men's Casual Watch Series GA2100-1A1

The Casio G-Shock GA2100-1A1 is an analog-digital men's watch from the 2100 Series. It has a 48.5 mm case made of carbon and resin, an octagonal bezel and a resin band.

It is water resistant to 200 m. The world time function covers 31 time zones, 48 cities and coordinated universal time. The stopwatch measures to 1/100 second.

Series
2100 Series
Display
Analog-digital
Case size
48.5 mm
Case material
Carbon and resin
Bezel
Octagonal
Band
Resin
Water resistance
200 m
World time
31 time zones, 48 cities and coordinated universal time
Stopwatch
1/100 second

Questions and answers

Is the GA2100-1A1 good for swimming?
Yes. It is rated to 200 m water resistance, which covers swimming and showering. Casio advises against pressing the buttons underwater.
How does it compare with the classic square G-Shock?
The GA2100 is noticeably slimmer and lighter, with analog hands instead of a full digital face. The square models offer a clearer digital display and more functions such as solar on some versions.
Does it have Bluetooth or solar charging?
No. The GA2100-1A1 runs on a standard battery and has no Bluetooth link to a phone. Solar and Bluetooth appear on other 2100 variants.
How readable is the display at night?
The hands have luminescent paint and there is an LED light. The negative LCD window is dim, so the digital readout is harder to see in the dark than the hands.
What is in the box?
The watch on its resin band, a manual and the standard Casio warranty paperwork.
Can I change the band?
Yes. It uses standard spring bars, so aftermarket straps that fit the lug width can be swapped in.
Where is the Casio G-Shock Analog Digital Men's Casual Watch Series GA2100-1A1 cheapest?
At Tempus Shop, for $95.00, 15% under what the other stores charge, as of our latest check.
What do buyers say about the Casio G-Shock Analog Digital Men's Casual Watch Series GA2100-1A1?
Rated 4.8 out of 5 from 270 ratings.
Where can I buy the Casio G-Shock Analog Digital Men's Casual Watch Series GA2100-1A1?
6 stores we checked sell it, including Bijoux Eclore, Tempus Shop, Klukkan, Gem Bijou, DailyWatch.

More from Casio

  • C
    Casio G-Shock Watch Gray Dial Analog Digital
    Casio G-Shock Watch Gray Dial Analog Digital
  • C
    CASIO G-Shock GA-2100 Series 'Light Blue' GA-2100-2A2
    CASIO G-Shock GA-2100 Series 'Light Blue' GA-2100-2A2
  • C
    CASIO G-Shock GA-2100 Series 'Dark Grey' GA-2100HD-8A
    CASIO G-Shock GA-2100 Series 'Dark Grey' GA-2100HD-8A
  • C
    Casio G-Shock Analog-Digital GA-900AS-7AJF - White
    Casio G-Shock Analog-Digital GA-900AS-7AJF - White
  • G
    G-SHOCK GA-2100-1A1 Black Analog-Digital Watch
    G-SHOCK GA-2100-1A1 Black Analog-Digital Watch
  • C
    Casio G-Shock GA-2100WS-7AER
    Casio G-Shock GA-2100WS-7AER
  • 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
    ANALOG-DIGITAL 2100 Series GA-2100-7AJF
  • All Casio deals and products →

    More men's analog-digital watches

    • G
      G-Shock GA2100-1A1 Men's Watch
      G-Shock GA2100-1A1 Men's Watch
    • 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
    • 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
    • C
      Casio G-Shock GA-2100 Series 'Grey Green' GA-2100K-1A
      Casio G-Shock GA-2100 Series 'Grey Green' GA-2100K-1A
    • C
      Casio G-Shock Neon Accent Analog Digital Quartz GA-2100-1A2 GA2100-1A2 200M Men's Watch
      Casio G-Shock Neon Accent Analog Digital Quartz GA-2100-1A2 GA2100-1A2 200M Men's Watch
    • カ
      カシオ 腕時計 ジーショック Bluetooth 搭載 ソーラー GA-B2100-1AJF メンズ ブラック
      カシオ 腕時計 ジーショック Bluetooth 搭載 ソーラー GA-B2100-1AJF メンズ ブラック