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G-Shock Casio Analog-Digital Watch GA2100

  • Based on 14 reviews
Condition: New
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$145.00 Why this price?
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Availability: In Stock.
Fulfilled by Runnwalk

Arrives Saturday, Apr 4
Order within 19 hours and 29 minutes
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Color: Black


Features

  • G-Shock GA2100GB-1A Black One Size

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.

Package Dimensions ‏ : ‎ 4.3 x 3.85 x 3.3 inches; 7.2 ounces


Item model number ‏ : ‎ GA-2100GB-1ACR


Department ‏ : ‎ unisex-adult


Date First Available ‏ : ‎ August 6, 2023


Manufacturer ‏ : ‎ G-Shock


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


Best Sellers Rank: #394 in Micro SD Memory Cards #1,069 in Men's Wrist Watches


#1,069 in Men's Wrist Watches:


Customer Reviews: 4.5 4.5 out of 5 stars (53)


Display: Analog-Digital


Watch Movement Type: Japanese Quartz


Additional Features: Alarm


Power Source: Battery Powered


Strap Type: Two Piece Strap


Water Resistance Depth: 100 Meters


Sport Type: Walking


Clasp Type: Buckle


Water Resistance Level: Waterproof


Embellishment Feature: Crystal


Closure Type: Buckle


Style Name: GA2100GB-1A


Shape: Round


Band Color: Black


Dial Color: Gold


Theme: Fashion Accessory


Pattern: Solid


Face Style: Crosshair


Character: Fashion


Brand Name: G-Shock


Model Name: G-Shock GA2100GB-1A Black One Size


Included Components: User Manual


Model Number: GA-2100GB-1ACR


Item Weight: 0.2 Kilograms


Manufacturer: G-Shock


Manufacturer Warranty Description: Warranty


UPC: 889232358185


Manufacturer Part Number: GA-2100GB-1ACR


Unit Count: 1 Count


Age Range Description: Adult


Item Type Name: G-Shock GA2100GB-1A Black One Size


Band Material Type: Plastic


Crystal: Glass


Case Diameter: 49


Band Width: 24


Case Thickness: 11.8 Millimeters


Bands: 1


Warranty Type: 2-year warranty


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Apr 4

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


  • Stylish
Color: Clear
Stylish watch just hard to read under glare
Reviewed in the United States on February 7, 2026 by Niyanu Rutherford

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

  • Very nice
Color: Clear
Love this
Reviewed in the United States on January 17, 2026 by Ken

  • The perfect beach/late watch.
Color: Clear
I bought it specifically for the the coating on the inside of the crystal. Its a fun watch that IMO belongs near the water. Being born in the 80's I remember in my teenage years when the future was going to have all you electronics in clear cases LOL. Reminds me of that time in history where tech was fun and colorful. Love the watch. ... show more
Reviewed in the United States on December 21, 2022 by Joe

  • Nice
Color: Clear
Beautiful watch
Reviewed in the United States on November 30, 2022 by Guillermo Llamozas

  • 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

  • SO MIRRORED YOU CANNOT SEE THE WATCH FACE
Color: Clear
Used my birthday money to purchase this beautiful watch. I am crying now because although it is beautiful to look at, it is useless. The rainbow glass is so mirrored, its like looking into mirror sunglasses - you cannot see a damn thing. I have tried it in the dark which is not much better than the light. In bright sunlight, you are only seeing your reflection and nothing on the watch face. Casio--how could you F this up so much? Put the rainbow glass but with an anti-reflection coating. Ugh. So frustrating ... show more
Reviewed in the United States on December 13, 2025 by totalhockeyfan101

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