Search  for anything...
G-Shock

G-Shock GA-2100 Series Watch

  • Based on 2,100 reviews
Condition: New
Checking for the best price...
$108.95 Why this price?
Save $241.04 was $349.99

Buy Now, Pay Later

As low as $18.16 / mo
  • – 6-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Monday, Jul 20
Order within 17 hours and 21 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Recently Viewed

Description

This G-ShockI watch features a round stainless steel case with a resin and carbon fiber overlay, adjustable resin band, traditional buckle closure, and red dial face. Shock resistant. Analog and digital time keeping. Dial face features stick index hour markers, digital display, sub-dial, minute track at perimeter, and brand name. Carbon Core Guard structure. A new carbon core guard structure protects the module by enclosing it in a carbon case. The case is made of fine resin embedded with carbon fibers for outstanding strength and crack resistance. Mineral crystal window. Water resistant up to 20 ATM/200 meters. Presentation box included. Imported.

Product Dimensions ‏ : ‎ 5 x 5 x 5 inches; 4 ounces


Item model number ‏ : ‎ GA2100-1A1


Department ‏ : ‎ womens


Batteries ‏ : ‎ 1 Lithium Metal batteries required.


Date First Available ‏ : ‎ August 19, 2019


Manufacturer ‏ : ‎ G-Shock


Product Warranty: For warranty information about this product, please click here


Best Sellers Rank: #30,803 in Clothing, Shoes & Jewelry (See Top 100 in Clothing, Shoes & Jewelry) #36 in Women's Wrist Watches


#36 in Women's Wrist Watches:


Display: Analog-Digital


Watch Movement Type: Quartz


Additional Features: Alarm


Power Source: Battery Powered


Strap Type: Two Piece Strap


Water Resistance Depth: 200 Meters


Sport Type: Walking


Clasp Type: Tang Buckle


Water Resistance Level: Water Resistant


Embellishment Feature: Crystal


Closure Type: Buckle


Style Name: Military


Shape: Round


Band Color: Black


Dial Color: Black


Theme: Sports


Pattern: Solid


Face Style: Hybrid


Brand Name: G-Shock


Model Name: GA2100-1A1


Model Number: GA2100-1A1


Series Number: 2100


Item Weight: 4 Ounces


Global Trade Identification Number: 30


Manufacturer: G-Shock


UPC: 889232241630


Manufacturer Part Number: GA-2100-1A1CR


Unit Count: 1 Count


Age Range Description: Adult


Band Material Type: Resin


Case Material Type: Resin Mixed With Carbon Fiber


Crystal: Scratch Resistant Mineral


Case Diameter: 45.4 Millimeters


Band Width: 22 Millimeters


Case Thickness: 11.8 Millimeters


Bands: 1


Warranty Type: Manufacturer


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Jul 20

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Great Watch
Model: GA2100-1A1
Love it great styling , good for casual bouts
Reviewed in the United States on April 25, 2026 by joan Miguel rodriguez
    • Exactly What I Was Looking For Exactly What I Was Looking For
Model: GA2100-1A1
Review Image by Ross B.
Review Image by Ross B.
Review Image by Ross B.
I have to admit, I don’t know what I expected when the box came, but what a pleasant surprise. I was looking for a watch I could take kayaking and on nature hikes, but I didn’t want to spend more than $100 on it. It needed to have a rubber or synthetic band that handled water well and was easily able to try with a towel. The watch needed to be waterproof but also not complicated. The G-Shock series is typically a very busy watch face, and the cases are usually so large (49mm and above). I wanted something that was smaller for my medium-sized wrist. I wanted a simplified G-Shock, but different, and not obnoxious. I found it with this model. Overall, it’s a nice watch. It shows very well. I like the world time setting and just love watching the hands spin around when I select the city. It fits my wrist and isn’t too big or heavy. I think it is very clean looking and I didn’t expect to say “wow” out of the box. But the design harkens back to the Audemars Piguet Royal Oak design, which is a dream look for most. This is why the watch is referred to as a “CasiOak”. I didn’t want a ton of little things to look at on the watch face so to me, looking down and checking the time is a real pleasure. There’s a day of the week and a time. Perfect. The light works well in the dark. The watch is made to be an activewear style watch so the material of the watch suits it’s ability to compete with products of the environment (water and dirt). So when I see these other comments that say things like "well the material feels cheap" or "the band is not what I thought", I don't know what other material they expected the watch to be made of. Overall, good watch and I'm not sure where the left of field reviews are coming from. I am pleased and would recommend this watch. ... show more
Reviewed in the United States on December 29, 2021 Reviewed in the United States on December 29, 2021 by Ross B.
    • Sleek, durable, and surprisingly lightweight
Model: GA2100-1A1
I’m really impressed with the G-Shock GA-2100 Series Watch. The "CasiOak" design lives up to the hype—it has a much slimmer profile than traditional G-Shocks, making it versatile enough to wear with almost anything while still being incredibly rugged. The carbon core guard structure makes it feel light on the wrist, but you can tell it’s built to handle some serious impact. The analog-digital display is clear, and the LED light is bright enough for easy reading in total darkness. If you want the legendary G-Shock durability in a more modern, understated aesthetic, this is the one to get. ... show more
Reviewed in the United States on May 13, 2026 by Joey
    • Amazing watch!
Model: GA2100-1A1
Not too big, perfect for my wrist.
Reviewed in the United States on April 15, 2026 by Diego Cascante
    • Comfortable. Not as horsey as other G-Shocks.
Model: GA2100-1A1
I bought the "stealth" (all black) version for the $99 list price here on Amazon from a seller called BrandsWalk. It seems that some dealers are price gouging on this watch, which is typical these days for certain watches that are in short supply (especially men's Rolex sport models or this particular G-Shock). My thanks to BrandsWalk for having the decency not to take advantage of this situation. As others have said, this G-Shock wears smaller than its 45mm diameter. I have small 6.75" wrists and this watch is quite comfortable and doesn't look totally ridiculous on my arm (at least from my perspective). I've always wanted a G-Shock but few of the models appealed, either because of aesthetics or their monstrous size. This model works on both accounts: No barnacle-like protrusions and a relatively slim aspect ratio. It looks good, feels good, and seems to work well (during the short period I've had it). I especially like the stealth version, which is adequately visible even in a dimly lit room. The day of the week indicator (near 9 o'clock) won't be easily visible unless you're in a brightly lit environment, but that doesn't bother me. The digital information (which can be toggled through date, world time, etc.) near the 4 o'clock part of the dial can be easily illuminated with a press of the B button (near the 2 o'clock position). My watch came set (accurately) to Tokyo time. It was easy to change to New York City time by reading the enclosed instruction booklet. I expect this watch will become one of my favorite "beater" watches. This is a great watch for $99. ... show more
Reviewed in the United States on September 18, 2019 by Regular Amazon Buyer
    • Casio watch fan
Model: GA2100-1A1
Great Casio watch. I’m a big fan of Casio watches. This one I wish I had purchased one with highlighted hands. They hard to see. Overall a great watch
Reviewed in the United States on May 16, 2026 by Kurt O.
    • So far, looks legit. I have to go get a checked due to it. Having UK packaging.
Model: GA2100-1A1
Buyer beware this is not in American Shipt Item or they purchased it from to the UK because of the packaging is paper. All of us are a G shock buyers. You will be bamboozled with the box because I’m a 10 collector. Now the watch seems to be legit but I have to call Casey and find out because I bought another G shot from another Amazon seller and it ended up being. Fake. I knew it was faith a minute. I took it out of the packaging because it was in a weird box. Which letters. I said Jay, but I knew that she does not do those type packaging. UK does have different packaging, but since it’s paper, I have to find out it’s validity so I will Circle back once I confirm if this G shock is a real one, and not a fake once I get to California and have an expert, take a look ... show more
Reviewed in the United States on May 13, 2026 by Lilia Cuellar
    • Perfect gift watch
Model: GA2100-1A1
Package well. It arrived on time before Christmas. A perfect gift for my son. The style is simple and the Brightness great the value for the watch is within range and ease of use is great it is digital and the functionality is perfect fit.
Reviewed in the United States on December 23, 2025 by REYNA BRAGG

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...