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G-Shock

G-Shock GA-2100-4A

Based on 869 reviews
Condition: New
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$78.84
Save $140.16 was $219.00

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At a glance

Condition
New
Model
GA21004A
Dimensions
5 x 5 x 5 in; 7.05 oz
Display
Analog-Digital
Watch Movement Type
Japanese Quartz
Additional Features
Water Resistant
Power Source
Battery Powered
In the box
G-Shock GA-2100-4A Red One Size

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 41

Product Dimensions 5 x 5 x 5 inches; 7.05 ounces
Item model number GA21004A
Department mens
Batteries 1 Lithium Metal batteries required. (included)
Manufacturer G-Shock
Product Warranty For warranty information about this product, please click here
Display Analog-Digital
Watch Movement Type Japanese Quartz

Frequently asked questions

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View our full returns policy here.

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

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Top Amazon Reviews

Cool red watch, that adds a little bling if you want to stand out.
Color: Red
The seller sent me the wrong model watch, the Iron Man G-shock, which I found atrocious looking. But Amazon sorted that quickly and I received the correct item 2 days later. This is a nice watch, I love the looks of the GA-2100 series. This all red edition really pops. The seller's photos are accurate color wise. The digital screen is easier to read than the blackout versions that come with most of this series of watches, but the red background makes the digital info pop when you turn your wrist the right direction in the light, the numbers look blue to me. I had one of the first G-Shocks when they came out in the early 80's. Loved that watch. The strap finally broke, I still have it somewhere. I should probably find it, and get a new battery and strap, I'm betting it would still work. Hoping this one gives me similar service, even if I have to replace the battery more often. I'm planning on buying another version of this watch, so I can interchange components for different looks. I think the red dial would look fantastic in the clear transparent strap/case. or having a black or white dial in the red strap/case would be cool too. As this watch is a lot of red. Only one complaint, and I don't know what Casio was thinking, other than trying to keep this all red, the bands clasp is plastic, instead of metal, like on the other variants of this watch. I see that being a weak point that will eventually break, on a G-shock. It should have been metal, black, silver or anodized red. ... show more
Reviewed in the United States on August 16, 2024 by DKMcGinnis
Beautiful
Color: Red
Review Image by Michael Gomez Michael Gomez
Review Image by Michael Gomez Michael Gomez
Review Image by Michael Gomez Michael Gomez
It’s so beautiful and eye catching, perfect size. Better then the Casio royal.
Reviewed in the United States on March 4, 2026 by Michael Gomez Michael Gomez
Perfect
Color: Red
Good color
Reviewed in the United States on December 17, 2025 by Old protein
Size
Color: Red
It’s a bit smaller then it normal buts it’s good
Reviewed in the United States on January 7, 2026 by kadijah abdool
Durability
Color: Red
Good size Nice watch
Reviewed in the United States on October 25, 2025 by Jhon Nanes
Fits perfectly
Color: Red
Review Image by Charvez Bell Charvez Bell
I just always wanted one
Reviewed in the United States on February 21, 2026 by Charvez Bell Charvez Bell
CasioOak Goodness!
Color: Red
I bought this watch to match a lot of the things I wear for my college alma mater. Frankly, this watch is hard to read due to a lack of contrast... everywhere... on its face. I knew this before I bought it based on reviews and pictures so it meets my expectations. I wear it and like it anyway.
Reviewed in the United States on January 8, 2025 by David Rodabaugh
Trayectoria
Color: Red
Muy excelente 👌 experiencia 💯
Reviewed in the United States on November 17, 2025 by Domingo Adonis Díaz Pineda
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