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 G1242 2100 Series GA-B2100-1A1 G-SHOCK

Casio G1242 2100 Series GA-B2100-1A1 G-SHOCK

Best price now

$121.33at ZeuskicksChecked Nov 8

Prices are checked against each store and labelled with when.

Visit Zeuskicks

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 $121.33 at Zeuskicks on Nov 8.

Our take on the Casio G1242 2100 Series GA-B2100-1A1 G-SHOCK

The Casio G-Shock GA-B2100-1A1 is the Bluetooth and solar version of the slim 2100-series 'CasiOak' analog-digital watch. It keeps the octagonal bezel and thin case that made the line popular, and adds Tough Solar charging plus phone pairing for automatic time correction and easy alarm and timer setup. It suits people who want a tough everyday watch with a cleaner look than the chunky classic G-Shocks. Against the original GA-2100 it adds solar power and Bluetooth, while the all-steel GM-B2100 costs more and weighs more.

Best forDaily wear with casual or street outfitsBuyers who want solar power and no battery swapsPeople who want a slimmer, lighter G-ShockTravelers who want phone-synced time
Pros
  • Tough Solar charging reduces battery changes
  • Bluetooth links to the phone app for time and settings
  • Slim, light case with the octagonal bezel look
  • 200-meter water resistance and shock resistance
  • Analog-digital display with world time and stopwatch
Cons
  • Small negative LCD subdial is hard to read in low light
  • No sapphire crystal; mineral glass can scratch
  • Bluetooth and app features add setup steps
  • Legibility of the hands suffers in dim conditions

Casio G1242 2100 Series GA-B2100-1A1 G-SHOCK prices at every store

  • ZeuskicksNew

    In stockShips from India · priced in INR (₹11,395.00) · duties may applyReturn policy

    $121.33Checked Nov 8
    Visit Zeuskicks

What reviewers say

Owners praise the slim case, light weight and solar-plus-Bluetooth combination, and many call it the best value in the 2100 line. Common complaints are the small, dim LCD window and the fiddly app pairing.

What people mention
  • Case sizePraisedOwners say the slim case and light weight make it comfortable for all-day wear.
  • Solar chargingPraisedTough Solar is seen as a real upgrade that cuts out battery swaps.
  • Display legibilityCriticisedThe small negative LCD window is called dim and hard to read in low light.
  • Bluetooth appMixedPhone sync is useful for time and alarms, but pairing is described as fiddly.
  • BuildPraisedOwners report it holds up to knocks and water without issue.

About the Casio G1242 2100 Series GA-B2100-1A1 G-SHOCK

This is the Casio G-SHOCK GA-B2100-1A1, part of the G-SHOCK 2100 Series.

Brand
Casio
Series
G-SHOCK 2100 Series
Model
GA-B2100-1A1
Product type
G-SHOCK watch

Questions and answers

How is the GA-B2100 different from the GA-2100?
The B2100 adds Tough Solar charging and Bluetooth phone pairing. The case shape and size are essentially the same.
Does it need a battery change?
It runs on a rechargeable cell charged by light through the dial. In normal use it should not need routine battery replacement.
What does the Bluetooth app do?
It syncs the time automatically and lets you set alarms, timers and world time from the phone instead of the buttons.
Is it good for swimming?
Yes. It is rated to 200 meters of water resistance, so swimming and showering are fine. Avoid pressing buttons underwater.
How does it compare with the steel GM-B2100?
The GM-B2100 has a full metal case and bracelet and feels heavier and dressier. The GA-B2100 is lighter, resin-cased and easier for sport and daily wear.
Where is the Casio G1242 2100 Series GA-B2100-1A1 G-SHOCK cheapest?
At Zeuskicks, for $121.33, as of our latest check.

More from Casio

  • C
    Casio G-Shock G-Steel 2100-Series Luxe Black Watch
    Casio G-Shock G-Steel 2100-Series Luxe Black Watch
  • C
    Casio GA2100CM-8A
    Casio GA2100CM-8A
  • C
    Casio G-Shock Full Metal Mobile Link Analog Digital Solar GM-B2100BD-1A 200M Mens Watch
    Casio G-Shock Full Metal Mobile Link Analog Digital Solar GM-B2100BD-1A 200M Mens Watch
  • C
    Casio G-Shock GA-2100-4A
    Casio G-Shock GA-2100-4A
  • G
    G-Shock GA-B2100-1AER Montre Casio
    G-Shock GA-B2100-1AER Montre Casio
  • C
    Casio Skeleton GA-2100SKE-7AER Watch
    Casio Skeleton GA-2100SKE-7AER Watch
  • C
    Casio Gents G-Shock Watch GA-B2100-1A1ER
    Casio Gents G-Shock Watch GA-B2100-1A1ER
  • C
    Casio Men's CasiOak Grey Dial Watch GM-B2100SD-1ACR
    Casio Men's CasiOak Grey Dial Watch GM-B2100SD-1ACR
  • All Casio deals and products →

    More men's analog watches

    • C
      Casio G-Shock GA-B2100 FC-3ADR CasiOak Solar Bluetooth Military Green
      Casio G-Shock GA-B2100 FC-3ADR CasiOak Solar Bluetooth Military Green
    • C
      CASIO G-SHOCK WATCH Carbon Core GA-B2100-1A1DR
      CASIO G-SHOCK WATCH Carbon Core GA-B2100-1A1DR
    • C
      Casio G-Shock Ga-B2100-3adr Oak Dynamic Sporty Green Men's Watch With Bluetooth & 200m Water Resistance
      Casio G-Shock Ga-B2100-3adr Oak Dynamic Sporty Green Men's Watch With Bluetooth & 200m Water Resistance
    • C
      Casio G-Shock GA-2100HDS-7A1
      Casio G-Shock GA-2100HDS-7A1
    • C
      CASIO G-Shock Analog-Digital 'Black' GA-B2100-1A1JF
      CASIO G-Shock Analog-Digital 'Black' GA-B2100-1A1JF
    • C
      Casio Men's G-SHOCK GA-B2100 Series Rubber Band GA-B2100-1A1JF
      Casio Men's G-SHOCK GA-B2100 Series Rubber Band GA-B2100-1A1JF
    • C
      Casio G-Shock GA-B2100 1ACR CasiOak Solar Bluetooth
      Casio G-Shock GA-B2100 1ACR CasiOak Solar Bluetooth
    • C
      CASIO G-SHOCK ANALOG-DIGITAL RESIN BAND GA-B2100LUU SERIES WATCH
      CASIO G-SHOCK ANALOG-DIGITAL RESIN BAND GA-B2100LUU SERIES WATCH