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Casio

Casio ga-2100-1a2er Watch

  • Based on 939 reviews
Condition: New
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Availability: Only 1 left in stock, order soon!
Fulfilled by Amazon
Arrives Jan 29 – Feb 20
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Description

Casio Sports Watch GA-2100-1A2ER

Is Discontinued By Manufacturer ‏ : ‎ No


Item model number ‏ : ‎ GA-2100-1A2ER


Department ‏ : ‎ mens


Batteries ‏ : ‎ 1 Lithium Metal batteries required. (included)


Date First Available ‏ : ‎ April 28, 2022


Manufacturer ‏ : ‎ Casio


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


Best Sellers Rank: #320,481 in Clothing, Shoes & Jewelry (See Top 100 in Clothing, Shoes & Jewelry) #1,685 in Men's Wrist Watches


#1,685 in Men's Wrist Watches:


Brand, Seller, or Collection Name: Casio


Model number: GA-2100-1A2ER


Part Number: GA-2100-1A2ER


Item Shape: Round


Dial window material type: Mineral


Display Type: Analog


Clasp: Buckle


Metal stamp: Resin


Case material: Resin


Case diameter: 45 millimeters


Case Thickness: 11 millimeters


Band Material: Plastic


Band width: 25 millimeters


Band Color: Blue


Dial color: Black


Bezel material: Resin


Calendar: Tag - Date


Special features: Chronograph, World Time, Alarm, Glow In The Dark, World Hours, Countdown, Lighting in the dark


Item weight: 1.8 ounces


Movement: Quartz


Water pressure resistance: 20 bar


Water resistant depth: 200 Meters


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


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Jan 29 – Feb 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.

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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews

    • Nice Watch
I giving 5 stars because I really like the looks and functionality of the watch. The hour/minute hands glow enough for me to tell the time in the dark. The only thing that needs help is a better light for setting alarms in the dark. If you are an Outdoors person (like me), I suggest using a Mini flashlight and strong teeth when trying to set alarms at night :-) Oh, I also am pleased with this watch band. This one is much softer than most of the rubber/synthetic bands that come with these watches. The first thing I usually do with a new watch is to find a much more comfortable band to fit. Not too easy with Casio G-Shock watches. ... show more
Reviewed in the United States on August 3, 2025 by Normie G
    • Good quality
Love this watches. But the dark screen makes hard to recognize the time
Reviewed in the United States on July 30, 2025 by Eugene
    • G shock
Watch arrived on time and in good condition. Other reviews were correct about it being a little hard to set up but reviewing a u tube video and it made it a lot easier. Nice looking timepiece. The LCD is a little hard to see but how many times a day are you gonna look at the date? Overall I'd give the watch 4.5 out 5. ... show more
Reviewed in the United States on May 3, 2025 by Bruce F
    • Gshock excelence
Everybody should own one.
Reviewed in the United States on October 4, 2025 by Ricardo
    • Visibility poor
The watch looks nice and it’s a good alternative in being a smaller size than other g-shocks which are pretty large. However as the other reviews state, the digital display is difficult to see. Unless under ideal lighting it’s very difficult to make out. That aside it’s a nice looking watch.
Reviewed in the United States on June 6, 2025 by question
    • Love The Options
Review Image by Jeff Jeff
Pros: Fits my 7-1/4" (7.25" / 184mm circumference) wrist quite comfortably with plenty of adjustment. I like the octagonal bezel with many different options of color and and dial. I enjoy the various modes it offers. It's nice being able to see UTC time and have timers as well as alarms. Since it's quartz/battery driven, I like not having to wind it or often adjusting the time compared to mechanical watches. Cons: I wish the hour and minute hand had a brighter luminescence but the on board light helps in the dark. It's also difficult to read the screen from 17min to 25min. Even worse from 3:17 to 3:25 when both the hour and minute hand are blocking the LCD screen. Overall: I love the watch. It has its minor issues but it wouldn't deter me. ... show more
Reviewed in the United States on September 19, 2023 by Jeff Jeff
    • FACE VERY HARD TO READ !
The watch is of course very accurate...that's a plus...but the black dial and blue markers are VERY hard to read, especially in low light. Even in bright light, including sunlight, you will need to have the watch at just the right angle to be able to read the digital "window". And even then, it's hard to see. I kept the watch, but really should have returned it. I purchased another version with a lighter dial that was easier to read. So this one stays in the drawer getting little or no time on my wrist. Bottomline...it looks good in the photos, but trust me, it's hard to read the dial! ... show more
Reviewed in the United States on November 20, 2025 by C. Robinson
    • Fits , feels, and looks great
Review Image by David Green David Green
You can most definitely read the second and minute hand. I know everyone complains about nighttime reading of the watch face. But unless you’re checking your watch, every five minutes, it’s not very complicated with the little light. If you just glanced down, check the time and that’s that. This is a really good looking, watch, and Fitz well, I absolutely love it! By the way, I don’t have the biggest wrist, and it fits me perfectly, and doesn’t look like I have a grandfather clock strapped on my arm. ... show more
Reviewed in the United States on January 8, 2024 by David Green David Green

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