Find Your Perfect G Shock: Master Model Number Guide

Amy Jul 20, 2026

In today's tech-savvy world, finding the model number of your G-Shock watch has become crucial for various reasons. Whether you're looking to identify its specific features, find compatible accessories, or simply want to know its model for collection purposes, we've prepared this guide to help you efficiently find your G-Shock model number.

Best G-Shock Watches (2026 Buyer’s Guide)
Best G-Shock Watches (2026 Buyer’s Guide)

G-Shock, a sub-brand of Casio, is renowned for its durable and robust timepieces. Therefore, understanding how to locate the model number on your G-Shock watch can save you time and effort in future service or upgrade needs.

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Casio G-shock Color Options, Casio G Shock Ga Series, Gshock Watch For Men, Casio G Shock Watch Collection, G-shock Watch Collection, Colorful G-shock Watch Collection, Casio G-shock Watch Collection, G Shock Lovers Collection, G Shock Military Style

Locating the Model Number

Finding your G-Shock model number is a straightforward process. The model number is typically displayed on the backside of your watch. Here's how to locate it:

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G Shock Poster, Casio G-shock Watch Advertisement, Casio G-shock Watch Catalog, Casio G Shock Visual Impact, G Shock Official Website, Casio G Shock Fire Package, G-shock Digital Sport Watch, G Shock Aviation Series, G-shock Ga-2000 Military Style

1. Turn your watch over to reveal the case back. Most G-Shock watches have a metallic or resin case back that can be unscrewed or pried off, depending on the model.

Analog or Ana-Digi Watches

Casio G-Shock MTG-M900DA-8CR | Best Atomic Tough Solar Watch for Men in USA
Casio G-Shock MTG-M900DA-8CR | Best Atomic Tough Solar Watch for Men in USA

If you own an analog or Ana-Digi G-Shock (like the GW-M5610 or GA-700), the case back is usually metallic and can be unscrewed using a small tool. Once you've removed the case back, look for any engraved or printed characters. The model number is usually followed by "G," "ASTRO," or "GRACE" for men's, women's, or baby-G models, respectively.

Example: GA-700GB-1A

Resin Cased Watches

G-SHOCK US Official Website | CASIO
G-SHOCK US Official Website | CASIO

For resin-cased G-Shock models (such as the GA-110 or GD-X6900), the case back is typically removable by prying it off. The model number is printed or engraved on the inside of the case back. Remember to replace the case back securely after noting down the model number.

Example: GA-110-1B

Understanding G-Shock Model Numbers

How to Set Time on G-SHOCK Watches -  Daylight Savings Time (DST)
How to Set Time on G-SHOCK Watches - Daylight Savings Time (DST)

Now that you've found your G-Shock model number, let's decipher it. A G-Shock model number consists of several components, each carrying specific information:

1. Letters at the beginning: These indicate the series or sub-series of the watch. For example, "GA" stands for the G-Adamantis series, while "GSC" represents the stylish G-Spirit Classic lineup.

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G-SHOCK | CASIO Casio G Shock Watches, Street Trends, Stylish Watches, Casio G Shock, G Shock, Sport Watches, Watch Collection, Watch Brands, Gym Outfit
Step 4. User’s manual
Step 4. User’s manual
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Styling my G-Shock Watches
Styling my G-Shock Watches
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G-Shock history - 1984 - 1995 - squares
G-Shock history - 1984 - 1995 - squares
G-SHOCK x Frank151 Digital Issue
G-SHOCK x Frank151 Digital Issue
CASIO Watches for Men & Women | CASIO
CASIO Watches for Men & Women | CASIO

First Letter Variations

Since 2019, G-Shock introduced new collections with unique first-letter variations, such as "GN" for the G-Force Neo series and "GP" for the premium G-Project line.

1. Number(s) in the middle: These indicate the specific model within the series. For instance, in the GA-110 series, "110" represents a specific model with certain features and design elements.

2. Letters at the end: These signify the color or finishes of the watch. The letter "A" generally denotes a black or standard color scheme, while other letters correspond to different colors or material finishes.

Aftermarket Modifications

Be aware that aftermarket modifications or repairs might change the original case back, making it difficult to find the model number. In such cases, you can refer to the watch's original packaging, receipt, or registry information to determine the model number.

Alternatively, you can compare the watch's features with those listed on official G-Shock websites or use a professional watch identification service to help confirm the model number.

There you have it! Now you can confidently identify the model number of your G-Shock watch, enabling you to better understand its features and find relevant accessories or services with ease. Happy exploring!