Skip to main content
VELOCEVELOCE
HOMEFEED
NEWS

The Journal

Watch news
& stories

All News
Latest
Browse all articles
Brands we're talking about
Browse by topic
Most PopularDive WatchesGMT & TravelChronographsDress WatchesUnder $500
BRANDS

The Directory

Every brand
worth knowing

Brand Directory
Fresh from the feed

Brands collectors just tagged in the community feed.

Most followed
All brands
CLUBSDEALERS
SHOP

The Collection

Find your
next watch

New Arrivals Under $500 Refurbished Shop All
Men'sDiveChronographGMTPilotFieldDressMoonphaseSkeletonShop all men's
Women'sDiveChronographGMTPilotFieldDressMoonphaseSkeletonShop all women's
Shop by PriceUnder $250$250 – $500$500 – $1,000$1,000 – $2,500$2,500 & up
Top BrandsLoading…All brands
SIGN IN
HOMEBRANDSCLUBSDEALERS

VELOCE

The Watch Collector's Community

Download on theApp Store
Get it onGoogle Play
Listen onSpotify
Listen onApple Podcasts
Add To Home Screen

FOLLOW

DISCOVER

The JournalWatch PodcastWatch Collector BlogCommunity FeedWatch BrandsAuthorized DealersSubmit Watch News

FEATURES

The Watch BoxTrack Your CollectionWhy Track Your WatchesCommunitySocial for CollectorsService RecordsLive Brand DisplayFor CollectorsFor Authorized DealersAdd or Claim Your ListingFor Watch BrandsWhy Veloce

MARKETPLACE

Browse WatchesTrack Your OrderSell Your WatchBuy Pre-Owned SafelyCustomer ReviewsDealer ConsignmentInvite a Dealer — Earn $25Marketplace in the ShopEveryday Carry (EDC)

GUIDES

Watch GlossaryAutomatic vs QuartzInside a MovementWater ResistanceWatch Size GuideStart CollectingSpot a FakeShare Your WatchWatch Games

COMPANY

About VeloceContactCommunity GuidelinesTerms of ServicePrivacy PolicyAccessibilityDelete Account

© 2026 Veloce — All rights reserved.

Built for watch collectors, by a watch collector.

Casio G-Shock GA-2100-1A1 | Veloce
ALLALL WATCHESAVI-8BREITLINGBULOVACASIOCITIZENDOXAFOSSILG-SHOCKHAMILTONLUMINOXOMEGAORIENTORISSEIKOTAG HEUERTISSOT REFURBISHED
Casio G-Shock GA-2100-1A1 GA2100-1A1 World Time Quartz Men's Watch — lifestyle

Watch

Casio G-Shock GA-2100-1A1 GA2100-1A1 World Time Quartz Men's Watch

Be the first to review
$149.99
or 4 interest-free payments of $37.50 withShop Pay
In stock · ready to ship

Quantity

1
5.0 from 2 verified reviews across Veloce
Free Shipping over $80 30-Day Returns
Authenticity guaranteed on every timepiece

Why you'll love it

A rugged and versatile watch suitable for daily wear and outdoor activities.

Nick here at Veloce personally ensures every order ships and arrives. Not sure it's the right piece, or want something different? Reach out — a real person will help you sort it, unlike the faceless shops out there.

Message Nick →

Description

The Casio G-Shock GA-2100-1A1 is a robust and stylish men's watch, perfect for those who lead an active lifestyle or appreciate durable, low-maintenance timekeeping. This G-Shock model combines iconic toughness with a sleek, modern design, making it suitable for both casual daily wear and more adventurous pursuits.

Featuring a unique analog-digital display, the GA-2100-1A1 offers the best of both worlds: classic analog hands for quick time checks and a digital display for additional functions. Its carbon core guard structure ensures exceptional shock resistance, a hallmark of the G-Shock brand.

Key Highlights:

  • Carbon Core Guard: Enhanced shock resistance in a slim profile.
  • Analog-Digital Display: Combines traditional and modern time-telling.
  • World Time: Convenient for travelers and global connectivity.
  • 200M Water Resistance: Ready for water sports and everyday splashes.

With its quartz movement, this Casio G-Shock delivers reliable accuracy and performance, making it an excellent choice for men seeking a versatile and resilient timepiece.

Specifications

Brand
Casio
Model/Ref
GA-2100-1A1
Gender
Men's
Display
Analog-Digital
Movement
Quartz
Case Material
Carbon Core Guard
Water Resistance
200m / 20ATM
Functions
World Time, Shock Resistant

How it works

What this watch’s key specs actually mean on the wrist.

Quartz

Quartz movement

A battery sends current through a quartz crystal that vibrates exactly 32,768 times a second, which the watch counts to keep time to within seconds a month — more accurate than almost any mechanical watch. Grab-and-go reliable: no winding, low maintenance, and years between battery changes.

200m / 20 ATM

Water resistance

Rated to 200m / 20 ATM — a true dive-capable rating. It handles swimming, snorkeling and recreational scuba diving without a second thought.

Carbon

Case material

Carbon composite is extremely light and shock-absorbing, with a marbled, high-tech look where no two cases are exactly alike. It brings serious-sports-watch DNA without the weight of metal.

Frequently Asked

Is the Casio G-Shock GA-2100-1A1 suitable for swimming?
Yes, the Casio G-Shock GA-2100-1A1 has a water resistance of 200m, making it suitable for swimming and other water sports.
What type of movement does this watch use?
This watch uses a quartz movement, which provides reliable and accurate timekeeping with low maintenance.
What is 'Carbon Core Guard' construction?
Carbon Core Guard is a G-Shock technology that integrates carbon fiber into the case, providing enhanced shock resistance while maintaining a slim profile.
Does this watch show time for different regions?
Yes, the Casio G-Shock GA-2100-1A1 features a world time function, allowing you to easily view times in multiple zones.
Who is this watch designed for?
This men's watch is designed for active individuals who need a durable, reliable, and low-maintenance timepiece for daily wear and various activities.

This piece ships through our authorized dealer network. All applicable customs and import fees are already included in the price shown, so nothing extra is owed when your order is delivered.

REVIEWS

—(0 reviews)

No reviews yet — be the first to review the Casio G-Shock GA-2100-1A1 GA2100-1A1 World Time Quartz Men's Watch.

SHOP SIMILAR

View all →
Seiko Srpk22 5 Sports U.S. Special Creation Automatic Watch

Seiko Srpk22 5 Sports U.S. Special Creation Automatic Watch

$197.47
Casio Standard Digital Resin Strap Quartz W-218HM-7AV Men's Watch

Casio Standard Digital Resin Strap Quartz W-218HM-7AV Men's Watch

$56.99
Casio Pro Trek Analog Digital Smartphone Link Black Dial Solar PRW-B1000B-2 100M Men's Watch

Casio Pro Trek Analog Digital Smartphone Link Black Dial Solar PRW-B1000B-2 100M Men's Watch

$557.99
Casio Digital Resin Strap Black Dial Quartz W-738H-1BV 100M Men's Watch

Casio Digital Resin Strap Black Dial Quartz W-738H-1BV 100M Men's Watch

$78.99

What customers are saying across Veloce

5.0

2 reviews

Read all reviews →
Sep 29, 2026

Nick the owner was very attentive in answering my questions regarding the delivery of the watch. I didn’t realize I ordered it from somewhere international, but nonetheless it arrived with no issues perfectly packaged. Thanks Nick!

Regan Ballin

Casio Youth Digital Resin Quartz W-218HC-4A W218HC-4 Women's Watch →
Mar 22, 2026

Handy little tool.

Greg M

Mini Titanium Pry Bar Keychain Multi Tool EDC Everyday →
Minor just purchased a Refurbished!🇺🇸Julio just purchased a Casio!🇺🇸Anthony just purchased a Casio!🇺🇸Michael just purchased a Seiko!🇺🇸Ashley just purchased a Casio!🇺🇸Ian just purchased a Diesel!🇬🇧Anthony just purchased a Casio!🇺🇸Karina just purchased a Just Cavalli!🇺🇸Leo just purchased a Hamilton!🇺🇸Brennan just purchased a Seiko!🇺🇸Jeffrey just purchased a Guess!🇦🇺Junio just purchased a Casio!🇺🇸Soixya just purchased a Emporio Armani!🇦🇺Claudia just purchased a Seiko!🇺🇸Cordell just purchased a Casio!🇺🇸Trevor just purchased a Casio!🇺🇸Okechukwu just purchased a Casio!🇺🇸Jaeho just purchased a Casio!🇺🇸Faustino just purchased a Casio!🇺🇸Eduardo just purchased a Casio!🇺🇸Aaron just purchased a Casio!🇺🇸Matthew just purchased a Casio!🇺🇸Laura just purchased a Casio!🇺🇸Facundo just purchased a Casio!🇺🇸Minor just purchased a Refurbished!🇺🇸Julio just purchased a Casio!🇺🇸Anthony just purchased a Casio!🇺🇸Michael just purchased a Seiko!🇺🇸Ashley just purchased a Casio!🇺🇸Ian just purchased a Diesel!🇬🇧Anthony just purchased a Casio!🇺🇸Karina just purchased a Just Cavalli!🇺🇸Leo just purchased a Hamilton!🇺🇸Brennan just purchased a Seiko!🇺🇸Jeffrey just purchased a Guess!🇦🇺Junio just purchased a Casio!🇺🇸Soixya just purchased a Emporio Armani!🇦🇺Claudia just purchased a Seiko!🇺🇸Cordell just purchased a Casio!🇺🇸Trevor just purchased a Casio!🇺🇸Okechukwu just purchased a Casio!🇺🇸Jaeho just purchased a Casio!🇺🇸Faustino just purchased a Casio!🇺🇸Eduardo just purchased a Casio!🇺🇸Aaron just purchased a Casio!🇺🇸Matthew just purchased a Casio!🇺🇸Laura just purchased a Casio!🇺🇸Facundo just purchased a Casio!🇺🇸