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G-Shock

G-Shock GA-2100 Series Watch

Based on 2,446 reviews
Condition: New
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$95.99
Save $14.01 was $110.00

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Availability: Only 1 left in stock, order soon!
Fulfilled by Amazon
Arrives Sunday, Nov 8
Order within 8 hours and 41 minutes

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At a glance

Condition
New
Model
GA2100-1A1
Dimensions
5 x 5 x 5 in; 4 oz
Weight
4 oz
Batteries
1 Lithium Metal batteries required.
Display
Analog-Digital
Watch Movement Type
Quartz
In the box
Presentation Box

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.

Specs 44

Product Dimensions 5 x 5 x 5 inches; 4 ounces
Item model number GA2100-1A1
Department womens
Batteries 1 Lithium Metal batteries required.
Manufacturer G-Shock
Product Warranty For warranty information about this product, please click here
Display Analog-Digital
Watch Movement Type Quartz

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Nov 8

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
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

Amazing but hard to see on low light.
Model: GA2100-1A1
Review Image by Ricardo Mendoza
I really like this G-Shock. The all-black look is awesome and it fits great on the wrist. My only issue is that because everything is black, it can sometimes be hard to see the hands quickly because they blend right into the background. Other than that, it’s tough, lightweight, and a great daily watch. ... show more
Reviewed in the United States on July 3, 2026 by Ricardo Mendoza
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
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
Clean and Easy to wear
Model: GA2100-1A1
Overall a decent/good accessory
Reviewed in the United States on July 6, 2026 by Amazon Customer
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
work watch
Model: GA2100-1A1
awesome work watch
Reviewed in the United States on July 1, 2026 by Sean Chon McCall
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.
Excelente acabado
Model: GA2100-1A1
En un inicio no me gustó porque es muy pequeño comparado con un G-Shock clasico, pero luego me fui acostumbrando, las dimensiones de la esfera aparentan un reloj de 40 mm, pero te termina de gustar por la calidad y acabado, es muy bueno, solo no esperes que sea un gshock grande
Reviewed in the United States on July 3, 2026 by Jenny Herrera
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