Search  for anything...
Casio

Casio ga-2100-1a2er Watch

  • Based on 1,163 reviews
Condition: New
Checking for the best price...
$98.57 Why this price?
Save $9.41 was $107.98

Buy Now, Pay Later

As low as $16.43 / 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, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

This item is returnable

View our full returns policy here.

Availability: 20 left in stock
Fulfilled by Amazon
Arrives Oct 30 – Oct 31
Order within 4 hours and 14 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Recently Viewed

Description

Casio Sports Watch GA-2100-1A2ER

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: #330,583 in Clothing, Shoes & Jewelry (See Top 100 in Clothing, Shoes & Jewelry) #1,174 in Men's Wrist Watches


#1,174 in Men's Wrist Watches:


Customer Reviews: 4.3 4.3 out of 5 stars (1,163)


Display: Analog


Watch Movement Type: Quartz


Additional Features: Alarm, Chronograph, Glow In The Dark, Timer, World Hours, World Time


Power Source: Battery


Strap Type: Two-piece strap


Water Resistance Depth: 200 meters


Sport Type: Walking


Clasp Type: Buckle


Water Resistance Level: Waterproof


Embellishment Feature: Crystal


Closure Type: Buckle


Style Name: GA-2100-1A2ER


Shape: Octagonal


Band Color: Blue


Dial Color: Black


Theme: Fashion


Pattern: Solid


Face Style: Minimalist


Character: Fashion


Brand Name: Casio


Model Name: G-Shock


Included Components: 1 x product


Model Number: GA-2100-1A2ER


Series Number: 2100


Item Weight: 51 g


Unit Count: 1 Count


Model Series: G-Shock


Manufacturer: Casio


Number of Items: 1


Age Range Description: Adult


Item Type Name: Sport Watch


Manufacturer Part Number: GA-2100-1A2ER


Band Material Type: Plastic


Case Material Type: Resin


Crystal: Mineral


Case Diameter: 45 millimeters


Band Width: 25 millimeters


Case Thickness: 11.8 millimeters


Band Length: 22 centimeters


Bands: 1


Warranty Type: Limited


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Oct 30 – Oct 31

This item is non-returnable:

This item is returnable

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.

Similar Products

Top Amazon Reviews

    • Bulletproof
This is my daily driver watch that goes with everything. It has been used and abused and still looks incredible.
Reviewed in the United States on March 28, 2026 by Flindaddy
    • Love The Options Love The Options
Review Image by 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 Reviewed in the United States on September 19, 2023 by Jeff
    • Stylish
Got this for my son for getting good grades he love it
Reviewed in the United States on March 9, 2026 by Shannelle green
    • 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
    • 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
    • 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
    • Excelente producto
Excelente precio/producto
Reviewed in the United States on February 18, 2026 by javier lopez
    • Economia y calidad
bonito barato muy buen equipo
Reviewed in the United States on April 7, 2026 by Oscar

Can't find a product?

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