---
product_id: 367826846
title: "GMAS2100-1A"
brand: "g-shock"
price: "€ 401.27"
currency: EUR
in_stock: true
reviews_count: 5
url: https://www.desertcart.at/products/367826846-gmas2100-1a
store_origin: AT
region: Austria
---

# 200m water resistance carbon core guard, ultra-light & slim 1/100-sec stopwatch precision GMAS2100-1A

**Brand:** g-shock
**Price:** € 401.27
**Availability:** ✅ In Stock

## Summary

> 🖤 Slim, tough, and unmistakably stylish — the G-Shock for the modern go-getter.

## Quick Answers

- **What is this?** GMAS2100-1A by g-shock
- **How much does it cost?** € 401.27 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/367826846-gmas2100-1a)

## Best For

- g-shock enthusiasts

## Why This Product

- Trusted g-shock brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Global Ready:** World time across 31 time zones keeps you effortlessly connected.
- • **All-Day Visibility:** Dual Super Illuminator LED lights with customizable afterglow.
- • **Unmatched Durability:** Carbon core guard structure ensures shock resistance without bulk.
- • **Sleek Octagonal Design:** Iconic G-Shock style, now in a compact, feminine silhouette.
- • **Effortless Functionality:** Full auto-calendar, 5 alarms, stopwatch & countdown timer at your command.

## Overview

The Casio G-Shock GMAS2100-1A is a downsized, lightweight version of the iconic GA-2100, featuring a durable carbon/resin case, 200-meter water resistance, and a sleek octagonal bezel. Designed with a chic monochromatic black resin strap accented by rose gold, it combines rugged shock resistance with refined style. Equipped with dual LED Super Illuminator lights, world time for 31 zones, stopwatch, countdown timer, and 5 daily alarms, this quartz-powered watch is perfect for professionals seeking both function and fashion.

## 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

Review: It is an elegant G-Shock, nothing fancy but it has its own style for sure.
Review: Good

## Features

- 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08ZDPZZFP |
| ASIN  | B08ZDPZZFP |
| Age Range Description | Adult |
| Band Colour | Black |
| Band Material Type | Resin |
| Band Width | 24 |
| Bands | 1 |
| Batteries  | 1 LR44 batteries required. |
| Brand Name | G-Shock |
| Case Diameter | 42 Millimetres |
| Case Material Type | Carbon/Resin |
| Case Thickness | 11 Millimetres |
| Character | fashion |
| Clasp Type | Buckle |
| Closure Type | Buckle |
| Crystal | Crystal |
| Customer Reviews | 4.5 4.5 out of 5 stars (236) |
| Customer reviews | 4.5 4.5 out of 5 stars (236) |
| Date First Available  | 18 Mar. 2021 |
| Department  | Watches |
| Dial Color | Black |
| Display | Digital |
| Embellishment Feature | Crystal |
| Face Style | Crosshair (possible other styles: Teaked, Linen) |
| Included Components | [watch band] |
| Is discontinued by manufacturer  | No |
| Item Shape | Octagonal |
| Item Type Name | Sport Watch |
| Item model number  | GMAS2100-1A |
| Manufacturer | G-Shock |
| Manufacturer  | G-Shock |
| Manufacturer Part Number | GMAS2100-1A |
| Model Name | Casio G Shock |
| Model Number | GMAS2100-1A |
| Pattern | Solid |
| Power Source | Battery Powered |
| Product Dimensions  | 20.32 x 12.7 x 12.7 cm; 150 g |
| Series Number | 2100 |
| Special Features | Glow In The Dark, Water Resistant |
| Sport Type | Walking |
| Strap Type | Resin Strap |
| Style Name | Watches |
| Theme | Sports |
| UPC | 889232300252 |
| Unit Count | 1 count |
| Watch Movement Type | Quartz |
| Water Resistance Depth | 30 Metres |
| Water Resistance Level | Waterproof |

## Images

![GMAS2100-1A - Image 1](https://m.media-amazon.com/images/I/81t1YBvN-sL.jpg)
![GMAS2100-1A - Image 2](https://m.media-amazon.com/images/I/51o0SxlSabL.jpg)
![GMAS2100-1A - Image 3](https://m.media-amazon.com/images/I/51hnw7inHRL.jpg)
![GMAS2100-1A - Image 4](https://m.media-amazon.com/images/I/81lQY1uSV8L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by A***R on 5 March 2026*

It is an elegant G-Shock, nothing fancy but it has its own style for sure.

### ⭐⭐⭐⭐⭐ Review
*by S***U on 25 September 2023*

Good

### ⭐⭐⭐⭐⭐ Review
*by D***D on 12 January 2026*

Great looking, great quality watch

## Frequently Bought Together

- G-Shock GMAS2100-1A
- G-Shock GA-2100 Series Watch

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*Product available on Desertcart Austria*
*Store origin: AT*
*Last updated: 2026-04-22*