---
product_id: 733367974
title: "GMAS2100-1A"
brand: "g-shock"
price: "¥384"
currency: JPY
in_stock: false
reviews_count: 5
url: https://www.desertcart.jp/products/733367974-gmas2100-1a
store_origin: JP
region: Japan
---

# Double LED lights for clear visibility 200m water resistance for all conditions Carbon Core Guard for ultimate durability GMAS2100-1A

**Brand:** g-shock
**Price:** ¥384
**Availability:** ❌ Out of Stock

## Summary

> ⌚ Elevate your wrist game with sleek resilience and subtle style

## Quick Answers

- **What is this?** GMAS2100-1A by g-shock
- **How much does it cost?** ¥384 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/733367974-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

- • **Workday Ready:** Subtle black and rose gold accents blend seamlessly with office attire and jewelry
- • **Always Visible:** Dual LED illumination ensures you never miss a beat, day or night
- • **Built to Endure:** Shock resistant carbon core guard structure keeps up with your active lifestyle
- • **Slim yet Sturdy:** Compact downsized design with signature octagonal bezel for a sleek professional look
- • **Waterproof Confidence:** 200-meter water resistance means no worries from meetings to weekend adventures

## Overview

The GMAS2100-1A is a compact, shock-resistant G-Shock watch featuring a carbon core guard structure, 200-meter water resistance, and dual LED lighting. Designed for professionals seeking a slim, stylish timepiece that balances durability with understated elegance, it fits smaller wrists perfectly and complements both work and casual settings.

## Description

This series downsizes the GA-2100 to create a simple and slim design. 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.

Review: G-shock with style.
Review: Good

## Features

- Carbon Core Guard structure
- Shock Resistant
- 200-meter water resistance
- Neobrite
- Double LED light: LED light for the face & LED backlight for the digital display

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08ZDPZZFP |
| Age Range Description | Adult |
| Band Colour | Black |
| Band Style1 - Band Style5 | Compact |
| Band Width | 24 |
| Brand | G-Shock |
| Case Diameter | 42 Millimetres |
| Case Shape | Octagonal |
| Case Thickness | 11 Millimetres |
| Character | fashion |
| Clasp Type | Tang Buckle |
| Closure Type | Buckle |
| Customer Reviews | 4.5 out of 5 stars 237 Reviews |
| Dial Colour | Black |
| Display Type | Analog-Digital |
| Embellishment Feature | Crystal |
| Item Type Name | watch |
| Manufacturer | G-Shock |
| Model Number | GMAS2100-1A |
| Movement Type | Quartz |
| Part Number | GMAS2100-1A |
| Series Number | 2100 |
| Special Feature(s)1 - Special Feature(s)3 | Water Resistant |
| Sport1 - Sport3 | Walking |
| Strap Type | Two Piece Strap |
| Theme | Sports |
| UPC | 889232300252 |
| Water Resistance Depth | 200 Metres |

## Images

![GMAS2100-1A - Image 1](https://m.media-amazon.com/images/I/81t1YBvN-sL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ G-shock with style.
*by A***R on 5 March 2026*



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



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



## Frequently Bought Together

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

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**Shop now:** [https://www.desertcart.jp/products/733367974-gmas2100-1a](https://www.desertcart.jp/products/733367974-gmas2100-1a)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-05-18*