---
product_id: 151104221
title: "G-SHOCK CASIO Carbon Core Guard Ga-2100-1ajf Mens Japan Import"
brand: "g-shock"
price: "HK$1886"
currency: HKD
in_stock: true
reviews_count: 13
url: https://www.desertcart.hk/products/151104221-g-shock-casio-carbon-core-guard-ga-2100-1ajf-mens
store_origin: HK
region: Hong Kong
---

# 200m water resistance 1/100 sec stopwatch & timer Carbon Core Guard shock resistance G-SHOCK CASIO Carbon Core Guard Ga-2100-1ajf Mens Japan Import

**Brand:** g-shock
**Price:** HK$1886
**Availability:** ✅ In Stock

## Summary

> ⌚ Elevate your wrist game with the unstoppable G-SHOCK Carbon Core 💥

## Quick Answers

- **What is this?** G-SHOCK CASIO Carbon Core Guard Ga-2100-1ajf Mens Japan Import by g-shock
- **How much does it cost?** HK$1886 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/151104221-g-shock-casio-carbon-core-guard-ga-2100-1ajf-mens)

## 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

- • **Precision Timekeeping:** Analog-digital display with world time & 5 alarms keeps you on schedule globally
- • **Rugged Carbon Core Guard:** Engineered for ultimate shock resistance without bulk
- • **Sleek Lightweight Design:** Slim 11.8mm profile and 51g weight for all-day comfort and style
- • **Super Illuminator LED Lights:** Stay effortlessly visible day or night with dual bright illumination
- • **Dive-Ready 200m Water Resistance:** Confidently wear it rain or shine, pool or ocean

## Overview

The G-SHOCK CASIO GA-2100-1AJF combines cutting-edge Carbon Core Guard technology with a sleek, lightweight resin design. Featuring 200-meter water resistance, precise analog-digital timekeeping, and dual Super Illuminator LEDs, this watch is built for professionals who demand durability and style in every environment.

## Description

Case / bezel material- Carbon / Resin.Resin Band.Mineral Glass.Carbon Core Guard structure.Shock Resistant.200-meter water resistance.World time.Stopwatch.Timer.Calendar.Case size- 51.2 x 47 x 14.1 mm.

Review: Son loves it!! - The G-SHOCK GA-2100 lives up to the hype—tough, lightweight, and stylish without trying too hard. The Carbon Core Guard makes it feel durable but comfortable for all-day wear, and the slim profile is a nice change from bulkier G-SHOCK models. Timekeeping is spot-on, the design looks great with anything, and it can clearly survive more than my daily schedule. If you want a rugged watch that looks clean and modern, this one’s an easy win. ⌚💪 My son loves it! He is 15 and was so excited to open it!
Review: G-Shock Ga-2100 - This is an excellent G-Shock! Comfortable to wear and stylish to look at. I wanted a non digital display g-shock and this fitted the bill for looks and price. It is easy to read - unlike some of the other faces where you cannot see the hands. Also the light is good for nighttime. Overall this is an excellent G-Shock and good value for money.

## Features

- Shock Resistant
- Resin Band
- Case / bezel material: Carbon / Resin

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07VHSBR4J |
| ASIN  | B07VHSBR4J |
| Age Range Description | Adult |
| Band Color | Black |
| Band Length | 24 Centimeters |
| Band Material Type | Resin |
| Band Width | 1.18 Centimeters |
| Batteries  | 1 CR2 batteries required. (included) |
| Best Sellers Rank | #469,038 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #1,988 in Men's Wrist Watches |
| Brand Name | G-Shock |
| Case Diameter | 45.4 Millimeters |
| Case Material Type | Resin |
| Case Thickness | 11.8 Millimeters |
| Character | Shock Resistant; World time, 1/100 second stopwatch (24 hour total with split), countdown timer (24 hours), 5 alarms, hourly time signal, dual Super Illuminator LED lights |
| Clasp Type | Buckle |
| Closure Type | Buckle |
| Crystal | Mineral Glass |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,352) |
| Date First Available  | August 1, 2019 |
| Department  | mens |
| Dial Color | Black |
| Display | Analog-Digital |
| Embellishment Feature | Crystal |
| Face Style | Analog-Digital |
| Included Components | Manual |
| Item Weight | 51 Grams |
| Item model number  | GA-2100-1AJF |
| Manufacturer | Casio |
| Manufacturer  | Casio |
| Model Name | Ga-2100-1ajf |
| Model Number | GA-2100-1AJF |
| Pattern | Carbon |
| Power Source | Battery Powered |
| Product Dimensions  | 9.8 x 1.77 x 0.39 inches; 1.8 ounces |
| Series Number | 2100 |
| Sport Type | Walking |
| Strap Type | Resin |
| Style Name | Shock Resistant; World time, 1/100 second stopwatch (24 hour total with split), countdown timer (24 hours), 5 alarms, hourly time signal, dual Super Illuminator LED lights |
| Unit Count | 1 Count |
| Warranty Type | Limited |
| Water Resistance Depth | 200 Meters |
| Water Resistance Level | Waterproof |

## Images

![G-SHOCK CASIO Carbon Core Guard Ga-2100-1ajf Mens Japan Import - Image 1](https://m.media-amazon.com/images/I/81mr5yOC4ML.jpg)
![G-SHOCK CASIO Carbon Core Guard Ga-2100-1ajf Mens Japan Import - Image 2](https://m.media-amazon.com/images/I/61EVuCRIC+L.jpg)
![G-SHOCK CASIO Carbon Core Guard Ga-2100-1ajf Mens Japan Import - Image 3](https://m.media-amazon.com/images/I/61oggT+SWML.jpg)
![G-SHOCK CASIO Carbon Core Guard Ga-2100-1ajf Mens Japan Import - Image 4](https://m.media-amazon.com/images/I/61WtIUYLMVL.jpg)
![G-SHOCK CASIO Carbon Core Guard Ga-2100-1ajf Mens Japan Import - Image 5](https://m.media-amazon.com/images/I/71umzxS15sL.jpg)

## Questions & Answers

**Q: How does the world time works? Can it display one zone with the hands and another one with the display? Or is it a zone at a time?**
A: Yes you can display two time zones at once. The hands will always display your selected home time zone and then you can also show any other time zone on the little lcd screen digitally as well. Also very easy to scroll through all time zones on the screen

**Q: Son originales o réplicas**
A: Son originales por supuesto .

**Q: how long did it take for delivery in the US?**
A: 2-3 days if I remember correctly. EMS service is extremely reliable if that’s how shipped.

**Q: Does “Japan import” mean it was manufactured - including case - in Japan?**
A: The movement is made in japan but the watch itself is built in thailand.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Son loves it!!
*by B***I on December 13, 2025*

The G-SHOCK GA-2100 lives up to the hype—tough, lightweight, and stylish without trying too hard. The Carbon Core Guard makes it feel durable but comfortable for all-day wear, and the slim profile is a nice change from bulkier G-SHOCK models. Timekeeping is spot-on, the design looks great with anything, and it can clearly survive more than my daily schedule. If you want a rugged watch that looks clean and modern, this one’s an easy win. ⌚💪 My son loves it! He is 15 and was so excited to open it!

### ⭐⭐⭐⭐⭐ G-Shock Ga-2100
*by P***H on November 11, 2024*

This is an excellent G-Shock! Comfortable to wear and stylish to look at. I wanted a non digital display g-shock and this fitted the bill for looks and price. It is easy to read - unlike some of the other faces where you cannot see the hands. Also the light is good for nighttime. Overall this is an excellent G-Shock and good value for money.

### ⭐⭐⭐⭐⭐ Awesome watch. Can’t go wrong.
*by N***. on January 14, 2024*

It’s just an amazing watch. Yes it is a popular model but for a reason!! It’s a perfect one for all kind of watch, you can dress up or down with it easily. Especially this color scheme with the white hour markers it is just stunning, not to even mention how comfortable it is, how accurate it is, how reliable it is. Overall you CANNOT go wrong with this model. The price of 90 dollars is definitely justified.

## Frequently Bought Together

- G-SHOCK CASIO Carbon Core Guard Ga-2100-1ajf Mens Japan Import
- GA2100 Metal Watch Band Case Replacement Kit, Stainless Steel Strap Bezel Accessories Compatible with Casio Mens G-Shock GA2100/GA-2110 Watches
- GA2100 Case Band Mod Kit, Stainless Steel Case Bezel Crown Silicone Strap Replacement Accessories Compatible with Men's Watches G-Shock GA-2100/GA-2110/GA-B2100

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**Shop now:** [https://www.desertcart.hk/products/151104221-g-shock-casio-carbon-core-guard-ga-2100-1ajf-mens](https://www.desertcart.hk/products/151104221-g-shock-casio-carbon-core-guard-ga-2100-1ajf-mens)

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-03-09*