25 guides
G-SHOCK guides
Straight answers before you buy: bezel fit and installation, moissanite, G-SHOCK models, sizing and care.
Bezels and moissanite
Fit, installation, stones and care for G-SHOCK bezels.
Moissanite G-SHOCK Bezels: Stones, Fit and Care
Everything to know before buying a moissanite G-SHOCK bezel: what VVS moissanite is, what the bezel is made of, which models it fits, and how to care for it.
G-SHOCK Bezels Explained: Replacement, Custom and Moissanite Bezels
What a G-SHOCK bezel is, why people replace it, the kinds you can buy (resin, metal, moissanite), which models they fit and what to check first.
Which Bezel Fits My G-SHOCK? Bezel Compatibility by Model
Find your G-SHOCK model number and match it to a replacement or moissanite bezel: GA-2100, DW-6900 and DW-5600 fit, with a live chart.
How to Change a G-SHOCK Bezel (GA-2100, DW-5600, DW-6900)
Remove the band, undo the four bezel screws, lift the old bezel off and fit the new one. Tools, mistakes to avoid and when to use a repair shop.
Moissanite vs Diamond vs Cubic Zirconia for Iced-Out Watches
Hardness, sparkle and price compared: why moissanite is the usual stone for iced-out watch bezels, and what “passes a diamond tester” means.
Iced-Out G-SHOCK Guide: Buss Down Bezels, Cost and What to Check
What an iced-out or buss down G-SHOCK is, the ways to get one, what a moissanite bezel costs and how to check stones, fit and finish.
G-SHOCK Bezel and Strap Replacement: What to Buy and How
When a G-SHOCK bezel or strap needs replacing, original versus aftermarket parts, how to find the part for your model, and how the swap is done.
What Is VVS Moissanite? Clarity, D Color and What It's Worth
What VVS and D color mean on moissanite, whether VVS moissanite is real, whether it passes a diamond tester, and why it has little resale value.
G-SHOCK models and specs
Sizes, battery life, water resistance and what each model is for.
G-SHOCK Model Guide: GA-2100 vs GM-2100 vs GW-6900 vs DW-5600 vs GMW-B5000
Compare the most popular G-SHOCK base models for custom watches — shape, display, weight and style — and find the right one for your wrist and rotation.
What Is a CasiOak? The GA-2100 Explained
Why the octagonal G-SHOCK GA-2100 is called the CasiOak, how it differs from the GM-2100, and how to choose a custom colorway.
How to Measure Your Wrist for a Watch (in 60 Seconds)
Measure your wrist with a tape or a strip of paper, then use our chart to see how GA-2100, GW-6900, GA-700 and Baby-G cases will wear.
Custom G-SHOCK Watches Explained: What “Custom” Means
What a custom G-SHOCK is, how GshockVendor styles differ from stock models, what is and isn't made by Casio, and what to check before you buy.
Can You Swim With a G-SHOCK? Water Resistance Explained
What 200 m / 20 bar water resistance means on a G-SHOCK, whether you can swim, shower or scuba dive with one, and what changes on a custom watch.
G-SHOCK Battery Life by Model (With Module Numbers)
How long each G-SHOCK battery lasts, by model and module number, from the GA-2100 and DW-5600 to the solar GA-B2100, GW-6900 and GMW-B5000.
G-SHOCK Size Chart: Case Size, Thickness and Weight by Model
G-SHOCK case size (mm and inches), thickness and weight by model, from the 11.8 mm GA-2100 to the 19.6 mm GA-V01, and which suit small wrists.
Tough Solar Explained: How Solar G-SHOCKs Charge and How Long They Last
How Casio's Tough Solar works, how much light a solar G-SHOCK needs, how long a full charge lasts by model, and how to charge one.
Multi-Band 6 Explained: How Atomic G-SHOCKs Set Themselves in the U.S.
How Multi-Band 6 G-SHOCKs receive the WWVB time signal from Fort Collins, Colorado, how far it reaches, and how to get a good sync.
How to Set the Time on a G-SHOCK (GA-2100, DW-5600, DW-6900)
Button-by-button steps from Casio's operation guides: set the time and date on a G-SHOCK GA-2100, DW-5600 or DW-6900, and fix a one-hour error.
What Is a G-SHOCK? History, Toughness and Model Names
Who invented the G-SHOCK, what “triple 10” means, why it survives drops, and how to read model names such as DW, GW and GA before you buy or customize one.
How to Find Your G-SHOCK Model and Module Number
Where the model name and the four-digit module number are on a G-SHOCK, what each one is for, and how to use them to find the right bezel, strap and manual.
How to Clean a G-SHOCK: Resin, Metal Bands and Iced Bezels
Casio's own care instructions for a G-SHOCK: how to clean a resin band, a metal band and the case, what causes early wear, and how to clean a custom bezel.
G-SHOCK Model Numbers Explained: GA-2100-1A1, DW-6900-1V and More
What G-SHOCK codes such as GA-2100-1A, 1A1, 1A2, 1A3, 1A4, CM-5A and DW-6900-1V mean, which colorway each is, and why the code matters for bezels.
Buying and ordering
Authenticity, warranty, shipping and tax.
How to Spot a Fake G-SHOCK (and Where to Buy a Real One in the U.S.)
Check the module number on the case back, test the functions against Casio's manual, inspect the print and buttons, and confirm the seller.
Do Custom G-SHOCKs Have a Warranty? Casio Coverage vs Customizer Coverage
What Casio's U.S. limited warranty covers, why modifications change the picture, and what GshockVendor covers on a custom G-SHOCK.
Shipping, Sales Tax and Duties on U.S. Orders
Free standard U.S. shipping with no minimum, when orders dispatch, delivery times, and why U.S. customers pay no import duties.