G-Shock GA-2100-4A

4.5 4.5 out of 5 stars 761 ratings
$69.28 with 30 percent savings
List Price: $99.00

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Red

Product details

Item display length
11 inches
Item width
5 inches
Material
Plastic
Metal type
Red
Clasp type
Buckle
Item type name
G-Shock GA-2100-4A Red One Size

About this item

  • 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.
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Frequently bought together

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G-Shock GA-2100-1A1 Black One Size
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Sold by JBD TRADING INC and ships from Amazon Fulfillment.
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Product details

  • Product Dimensions ‏ : ‎ 5 x 5 x 5 inches; 7.05 ounces
  • Item model number ‏ : ‎ GA21004A
  • Department ‏ : ‎ mens
  • Batteries ‏ : ‎ 1 LR44 batteries required. (included)
  • Date First Available ‏ : ‎ September 16, 2019
  • Manufacturer ‏ : ‎ G-Shock
  • ASIN ‏ : ‎ B07XYBQDSG
  • Customer Reviews:
    4.5 4.5 out of 5 stars 761 ratings

Looking for specific info?

Product 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 specifications

Jewelry Information
Brand, Seller, or Collection Name G-Shock
Metal Red
Material plastic
Item Length 5 inches
Height 0.7 inches
Width 14 inches
Length 11 inches
Clasp Buckle
Model number GA21004A

Top Brand: G-Shock

Highly Rated
100K+ customers rate items from this brand highly
Trending
10K+ orders for this brand in past 3 months
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Customer reviews

4.5 out of 5 stars
4.5 out of 5
761 global ratings

Customers say

Customers like the comfort of the outdoor recreation watch. They say it's very comfy and fits great. They also like the weight and quality. However, some customers find the watch very complicated and unfriendly. They mention that the back lighting is very poor and it'll be difficult to set the various functions. Customers disagree on size, readability, and color.

AI-generated from the text of customer reviews

18 customers mention17 positive1 negative

Customers are satisfied with the quality of the outdoor recreation watch. They mention that it is a beautiful, nice watch with a crisp analog digital display.

"just beautiful" Read more

"...But it’s comfortable, and it looks nice on the wrist. Nice size for a G-Shock, too. Not too bulky, but big enough for any size wrist...." Read more

"...… idk maybe that’s how they do ‘em now days … all in all it’s a nice watch .. got me a pink one to!!" Read more

"This thing is super slick" Read more

7 customers mention7 positive0 negative

Customers are satisfied with the weight of the outdoor recreation product. They mention that it is very lightweight, not too bulky, and has the perfect number of functions.

"...I wanted something tough, but beautiful.This one is light, and I have no problem reading the hour (analog)...." Read more

"The watch is extremely lightweight and easy to read." Read more

"...Nice size for a G-Shock, too. Not too bulky, but big enough for any size wrist. This is a watch you buy for the looks, not to tell the time." Read more

"Very lightweight and love the color." Read more

5 customers mention5 positive0 negative

Customers are satisfied with the comfort of the outdoor recreation product. They mention that it is very comfortable and fits their son great.

"...But it’s comfortable, and it looks nice on the wrist. Nice size for a G-Shock, too. Not too bulky, but big enough for any size wrist...." Read more

"Beautiful red, very comfy something my hubby & I can actually share!! I think I ❤a lil more but he was happy to receive!!" Read more

"Fits my son great! Directions could have been explained a little better when setting the watch but other than that it’s great for him!" Read more

"Watch has nice look. Loved the red. Comfortable to wear. Unfortunately I was very disappointed in the operation of this watch...." Read more

4 customers mention4 positive0 negative

Customers are satisfied with the transaction. They mention that the Casio Oak delivers on value for money and is an exceptional offering.

"Items were as described, great condition. Happy with the transaction! Will do business again." Read more

"...The "Casio Oak" delivers on value for money and will be a staple in my rotation." Read more

"Affordable time piece..." Read more

"Great transaction..." Read more

12 customers mention7 positive5 negative

Customers have mixed opinions about the color of the outdoor recreation product. Some find the color nice, while others say it's not that good, difficult to use, and has little contrast.

"...This watch out of many was on his list and he loves it. It's a nice Cherry red and arrived in pristine condition...." Read more

"...I like it, but it’s not very practical in actual use. Everything is red, so it’s hard to read. The digital dial is pretty much useless...." Read more

"...he was super pleased with how it was built how it feels and the all red coloring. It was a perfect birthday gift for a picky man" Read more

"I don’t know why but the red has faded and it now looks black and dirty. It has only been 3 months of regular wear...." Read more

10 customers mention3 positive7 negative

Customers are mixed about the readability of the outdoor recreation product. Some mention that it's easy to read, while others say that it is difficult to read the time on a glance. They also mention that the digital screen is nearly impossible to read and that the red hands are difficult to see against the red watch face.

"...Everything is red, so it’s hard to read. The digital dial is pretty much useless. The light barely works, and the lume only lasts a few minutes...." Read more

"...This one is light, and I have no problem reading the hour (analog)...." Read more

"...found it too small for my 7.5-inch wrist and too dark and monochromatic for easy reading...." Read more

"...the overall appearance of this watch, but it is nearly impossible to read the digital screen which also means it is nearly impossible to set the..." Read more

9 customers mention3 positive6 negative

Customers are mixed about the size of the outdoor recreation product. Some mention it's a nice size for a G-Shock, not too bulky, but big enough for any size wrist. However, others say that it'd be difficult to read the time with the small digital face.

"...I do love this rendition of a G-Shock, but I found it too small for my 7.5-inch wrist and too dark and monochromatic for easy reading...." Read more

"...Nice size for a G-Shock, too. Not too bulky, but big enough for any size wrist. This is a watch you buy for the looks, not to tell the time." Read more

"I love it!! But it is small" Read more

"This watch is small and cheap looking. I was very disappointed when I received it. It was a birthday gift for my boyfriend." Read more

6 customers mention0 positive6 negative

Customers find the outdoor recreation watch very complicated and unfriendly. They say the back lighting is very poor, making it difficult to set the various functions. Customers are also disappointed in the operation and find the digital dial useless. Overall, they describe the watch as a failure of execution by Casio.

"...Everything is red, so it’s hard to read. The digital dial is pretty much useless. The light barely works, and the lume only lasts a few minutes...." Read more

"I like it, but setting it isn't fun." Read more

"...Overall this watch is a failure of execution by Casio. I still like many other Casio models, but this one will stay in the box." Read more

"...Loved the red. Comfortable to wear. Unfortunately I was very disappointed in the operation of this watch. Very complicated and very user unfriendly...." Read more

Amazing! Too small? Difficult to read?
5 Stars
Amazing! Too small? Difficult to read?
It isn't a giant g-shock. That's exactly why I got this: I loved the idea of the g-shock, but I hated the execution. I wanted something tough, but beautiful.This one is light, and I have no problem reading the hour (analog). the digital isn't as clear as the analog part, but I got this specific watch because I love analogs. Though you can indeed see the digital part, it's easier to read the digital part in other models that are only digital. Now, even if this is a "small" g-shock, it's actually a big watch comparing to others I own. I like it very much though, so for small wrist people and for those who just don't want to attach a wall watch to their wrist, it's a great deal.
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Top reviews from the United States

CarlK
5.0 out of 5 stars Cool watch
Reviewed in the United States on December 11, 2023
Color: RedVerified Purchase
You can’t beat a red G Shock it’s a shame Casio cheaped out on a plastic clasp would have preferred metal clasp even though it wouldn’t match.
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Samuel Abebe
5.0 out of 5 stars Fast shipment, thanks!
Reviewed in the United States on February 7, 2024
Color: RedVerified Purchase
Items were as described, great condition. Happy with the transaction! Will do business again.
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Lin
5.0 out of 5 stars Amazing! Too small? Difficult to read?
Reviewed in the United States on March 5, 2021
Color: RedVerified Purchase
It isn't a giant g-shock. That's exactly why I got this: I loved the idea of the g-shock, but I hated the execution. I wanted something tough, but beautiful.

This one is light, and I have no problem reading the hour (analog). the digital isn't as clear as the analog part, but I got this specific watch because I love analogs. Though you can indeed see the digital part, it's easier to read the digital part in other models that are only digital. Now, even if this is a "small" g-shock, it's actually a big watch comparing to others I own. I like it very much though, so for small wrist people and for those who just don't want to attach a wall watch to their wrist, it's a great deal.
Customer image
Lin
5.0 out of 5 stars Amazing! Too small? Difficult to read?
Reviewed in the United States on March 5, 2021
It isn't a giant g-shock. That's exactly why I got this: I loved the idea of the g-shock, but I hated the execution. I wanted something tough, but beautiful.

This one is light, and I have no problem reading the hour (analog). the digital isn't as clear as the analog part, but I got this specific watch because I love analogs. Though you can indeed see the digital part, it's easier to read the digital part in other models that are only digital. Now, even if this is a "small" g-shock, it's actually a big watch comparing to others I own. I like it very much though, so for small wrist people and for those who just don't want to attach a wall watch to their wrist, it's a great deal.
Images in this review
Customer image
Customer image
12 people found this helpful
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Jeff Swedran
4.0 out of 5 stars Lightweight
Reviewed in the United States on February 10, 2024
Color: RedVerified Purchase
The watch is extremely lightweight and easy to read.
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ARA
5.0 out of 5 stars Great gift for the boyfriend
Reviewed in the United States on January 9, 2023
Color: RedVerified Purchase
I bought this watch for my boyfriend for Christmas. He recently got into collecting watches and loves all things G-Shock. This watch out of many was on his list and he loves it. It's a nice Cherry red and arrived in pristine condition. Highly recommend if you're a collector.
One person found this helpful
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skinny
5.0 out of 5 stars Buen tono, buena calidad y buen precio
Reviewed in the United States on January 22, 2023
Color: RedVerified Purchase
Eh tenido varios de estos y eh regalado varios, a quien le eh dado les han encantado y los que tengo a mi me encantan, los colores y el material es bueno lusen bien y son de buena marcaa, compraria mas de estos, este fue un regalo para mi madre y le ah encantado.
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Rupert
5.0 out of 5 stars beautiful
Reviewed in the United States on April 30, 2023
Color: RedVerified Purchase
just beautiful
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Top reviews from other countries

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Isaac A.
5.0 out of 5 stars G Shock de calidad increíble
Reviewed in Mexico on February 26, 2024
Color: RedVerified Purchase
Excelente reloj mi favorito
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Yolobathsalts
5.0 out of 5 stars One of the best watches I own
Reviewed in Canada on February 20, 2023
Color: RedVerified Purchase
Out of all the watches I own this one is really my favorite. I own a Rolex, an Omega a handful of Seiko 5s and countless Vostok watches, and out of all of those I find this on my wrist more often than all my other watches. It keeps time better and it's extremely durable which is amazing for the line of work I'm in.
2 people found this helpful
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Shelving Melvin
5.0 out of 5 stars you tube videos help you set it
Reviewed in the United Kingdom on September 21, 2022
Color: RedVerified Purchase
my daft mate took his gshock to a jeweller and paid 5 quid to set it when there are youtube videos showing you what to do. good watch. sturdey enough to hold up on the business site for now.
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Ewan Gregory
5.0 out of 5 stars It's exactly what you expect. Casio godtier
Reviewed in Australia on January 7, 2023
Color: RedVerified Purchase
Very happy😀 excellent condition
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Nacim
5.0 out of 5 stars Great Solid Slim GShock
Reviewed in Canada on March 21, 2024
Color: RedVerified Purchase
Probably the slimmest, sleekest G-Shock watch.
Really vivid color and perfect size
Kinda weird to setup but you can easily find in to YT
The Red Negative LCD screen is very hard to read without the backlight on tho
Customer image
Nacim
5.0 out of 5 stars Great Solid Slim GShock
Reviewed in Canada on March 21, 2024
Probably the slimmest, sleekest G-Shock watch.
Really vivid color and perfect size
Kinda weird to setup but you can easily find in to YT
The Red Negative LCD screen is very hard to read without the backlight on tho
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Customer image
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