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Casio G-Shock Red Resin Octagonal Analog-Digital Watch GA2100RRB-4A

Based on 12 reviews
Condition: New
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$102.99
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Availability: In Stock.
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Arrives Saturday, Nov 7
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At a glance

Condition
New
Color
Red
Model
GA-2100RRB-4A
Dimensions
6 x 6 x 6 in; 5.47 oz
Display
Analog-Digital
Watch Movement Type
Japanese Quartz
Strap Type
Two Piece Resin

Description

The iconic 2100 series was introduced in 2019 and quickly became one of G-SHOCK's most popular lines of thin watches. An octagonal bezel gives the GA2100-1A its sophisticated appeal, and the black dial combined with a negative digital display presents a dark backdrop for the eye-catching gray indices and hands. A slim and elegantly contoured watch that complements your attire with or without sleeves, this GA2100 offers a dark charismatic coupling of modern style and absolute toughness. A Thin Watch with Signature G-SHOCK Toughness At only 11.8mm thick, the watch case creates a slim profile that makes the 2100 series a comfortable everyday watch. Although wonderfully thin, the GA2100 doesn't skimp on protection. G-SHOCK innovative design utilizes a Carbon-Core Guard Structure that begins with an advanced carbon fiber- reinforced resin case. The entire GA2100 series maximizes the utility of a compact design while advancing the G-SHOCK legacy for crafting some of the toughest watches on the planet. 200-meter water resistance (wr 20 bar) and scratch-resistant mineral glass round out an incredible array of protection. Weighing only 51 grams, the GA2100 packs all this protection into a comfortable watch whose sleek, thin profile is magnified by its dark styling. Features of the G-SHOCK GA2100 Thin Watch Technological innovation abounds in the compact case of the GA2100. World Time displays the time in 31 time zones (48 cities), great for coordinating global business or keeping in touch with distant family and friends. A stopwatch, timer, and five daily alarms help you to organize your day, keep track of important ongoing tasks such as cooking and project time tracking, and stay focused without the need to shift your attention to a screen. The stopwatch offers elapsed time, split time, and 1st and 2nd place times. Keep an eye on your children's screen time with elapsed time or utilize the split time to measure various segments of an important presentation and track segment pacing in a natural flow. The GA2100-1A can become an integral part of your daily organization and task completion. This thin watch combines bold style with daily functionality.

Specs 35

Product Dimensions 6 x 6 x 6 inches; 5.47 ounces
Item model number GA-2100RRB-4A
Department mens
Batteries 1 Nonstandard Battery batteries required.
Manufacturer Casio G-Shock
Product Warranty For warranty information about this product, please click here
Display Analog-Digital
Watch Movement Type Japanese Quartz

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Nov 7

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


G shock watch
Color: Red
Nice and comfortable
Reviewed in the United States on May 16, 2026 by duana perry

Perfect gift for him Perfect gift for him
Color: Black
Got this for my bf and he loves it!
Reviewed in the United States on April 20, 2026 Reviewed in the United States on April 20, 2026 by Tee

I love the light
Color: Black
Love it , works great easy to use
Reviewed in the United States on July 17, 2025 by Calandra

Awesome!
Color: Black
This watch is awesome. This watch get's a lot of attention. It's durable, and great for the price.
Reviewed in the United States on May 31, 2024 by Robert Jefferson

Son absolutely loves it!!!!
Color: Black
Thinking of getting a different style next year.
Reviewed in the United States on October 5, 2024 by T Shav

Item exactly as described
Color: Black
I bought it for my boyfriend for his bday and he loved it.
Reviewed in the United States on April 26, 2024 by Kristin

Dial is pink.
Color: Red
Was definitely interested in the red and black color. Not a fan of the dial color which I was hoping was more red than pink. When people make fun of me, I will just tell them the dial is red. Seems a little undersized also compared to what the listed size is. I'll keep it and possibly give it to my wife. Great looking watch though overall. Time setting is easy if you've had a G shock and it seems durable. ... show more
Reviewed in the United States on March 16, 2026 by Shop at the Mall
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