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G-Shock

GMAS2100-1A

  • Based on 198 reviews
Condition: New
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$99.00 Why this price?

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Availability: Only 5 left in stock, order soon!
Fulfilled by Watch Trendz
Arrives Wednesday, Feb 18
Order within 4 hours and 14 minutes
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Description

From Casio G-Shock, this new GMAS2100 watch is a downsized version of the GA-2100 model. It is slim, lightweight, and compact in design and boasts a chic, monochromatic look. The octagonal bezel, flat face, simple bar hour markers, and carbon core guard structure that are distinctive features of the GA-2100 are now available in a compact configuration. The black resin strap and matching dial with rose gold-tone accents adds a feminine pop of color to this new style.Shock Resistant200-meter water resistanceCarbon Core Guard structureCase/bezel material: Carbon/ResinBlack Resin BandMineral Glass Neobrite Double LED light LED light for the face (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)LED backlight for the digital display (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)World time - 31 time zones1/100-second stopwatchCountdown timer5 daily alarmsHourly time signalHand shift featureFull auto-calendar (to year 2099)12/24-hour formatButton operation tone on/offRegular timekeepingSize of case : 46.2?42.9?11.2mmCasio Style : GMAS2100-1A

Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 8 x 5 x 5 inches; 5.29 ounces


Item model number ‏ : ‎ GMAS2100-1A


Department ‏ : ‎ Watches


Batteries ‏ : ‎ 1 LR44 batteries required.


Date First Available ‏ : ‎ March 18, 2021


Manufacturer ‏ : ‎ G-Shock


Best Sellers Rank: #218,708 in Clothing, Shoes & Jewelry (See Top 100 in Clothing, Shoes & Jewelry) #488 in Women's Wrist Watches


#488 in Women's Wrist Watches:


Brand, Seller, or Collection Name: G-Shock


Metal stamp: Not stamped


Metal: Black Gold


Gem Type: not known


Setting: no-setting-type


Item Length: 8 inches


Clasp: Buckle


Model number: GMAS2100-1A


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Feb 18

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Great watch for wife
My wife wanted another G shock but she doesn't like Baby G shocks and she wanted something that was fitting for her work place. She saw these come out and she liked the black one. I bought it as a gift and it 100% met her expectations. It's a good size for a small wrist. It doesn't say Baby G on it which is a turn off for some people. The black is a nice shade for a clean look and the rose gold like accents give the watch a little something so it fits in well in a work environment and jewelry coordination. If it was like the all black larger version it would be too tacti-cool for some settings. It's super light and it reads well. This watch definitely fulfills every bit of its specs, advertising and online appearance. Sometimes it's hard to tell how a watch will look in person and on the wrist but this one was spot on. If you are liking it but are unsure, spring for it. It meets the hype, and some. ... show more
Reviewed in the United States on July 14, 2021 by averageguy
    • Rugged but elegant
Beautiful watch and works great.
Reviewed in the United States on September 23, 2025 by Holly Baker
    • miy buen reloj
Review Image by wilson ardila wilson ardila
muy bueno, es liviano, con la calidad de casio
Reviewed in the United States on February 1, 2026 by wilson ardila wilson ardila
    • Very cool
Review Image by RRZR RRZR
It’s a very nice watch. Friend made fun of me that it’s very army vibe but I like that. If you are buying it for the digital aspect it’s very tiny. The analog is more prominent and the digital time is small sometimes even hard to tell if the time hands are blocking it To set the time I had to YouTube it; after a few tries I figured it out. I only took off one star because the digital Time is smaller than expected I really love the watch and plan to wear it for daily use Was also surprised the date was accurate when I turned it on ... show more
Reviewed in the United States on October 15, 2024 by RRZR RRZR
    • Ronda
Excelente calidad
Reviewed in the United States on December 31, 2025 by Ronda
    • Not what is looks like
Looks better online. Small face and hard to read date.
Reviewed in the United States on January 24, 2026 by Tim Holmes
    • Great price and received quickly
Rugged watch yet sleek and stylish compared to other G shock models. Very comfortable and not as bulky as other models. Nice time piece
Reviewed in the United States on February 1, 2025 by Ryan
    • Reloj
Llego antes de lo esperado, que excelente producto y llego 100% limpio
Reviewed in the United States on September 5, 2025 by Yosmar Guaman

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