On a Casio G-Shock Watch, how do you set the time?

The G-Shock watch series was first released by Casio in 1983, and by 2017, more than 100 million watches had been sold. Men’s and women’s timepieces from this well-known brand are reputed to be almost damage-proof. But not everyone quickly picks up how to operate this kind of watch. If your Casio G-Shock needs its time to be reset, continue reading to learn how to do it.

Learning How to Use the Watch Buttons

The Casio G-Shock line, for the majority of model types, is mainly operated through four buttons that appear on the edge of the face, unlike a traditional watch which may feature dials and winders. The A button is located on top left, and the B button is located on top right.

The C button is on the lower left, and the D button is on the lower right. Some models have somewhat varied button layouts, with the bottom left and right buttons having the labels D and E and C being a long button in the middle of the side.

The L button, which is included on some versions, is located near the bottom. However, the A through D arrangement is found on the majority of G-Shock timepieces.

How to Manually Set a G-Shock Watch

You might wish to manually set the time on your watch if you need to modify or update the time. You must switch to timekeeping mode to accomplish this. Hold down your A button for a few seconds to start the watch in timekeeping mode. The A button is the same on all models, so keep that in mind.

Once you’ve done that, SET should come up first, then ADJ. The time zone must first be selected on more recent watch models before the time. To go between the correct screens, press the top and bottom buttons on the watch’s right side.

You could be prompted by your watch to confirm your DST status. You can also select 24-hour standard time or the 12-hour military format to display the time.

Establishing Atomic Timekeeping: Setting

Atomic timekeeping may be compatible with more recent G-Shock watches. This indicates that the watch has the ability to reset itself using any atomic clock on the planet. Take it off and set it in a window sill to retain atomic time.

There should be no barriers or electronic signals in the region that could prevent the watch from updating. Casio claims that it should set itself in 12 minutes or less, however it is advised to let it sit for longer to be certain.

How to Use Your Phone to Set Your Watch

You can use Bluetooth to reset the time on your phone or tablet if your newer G-Shock supports that feature. You must first download the Connected app for G-Shock watches from Casio.

Ensure that your phone has Bluetooth turned on and that the watch is three feet or less from the phone. Launch the app, then press and hold the phone’s lower-left button (usually C) for 4 seconds until a connection is created.

If You Need Assistance Using or Setting Up Your Watch

If you can’t find your physical owner’s manual and you’re still having trouble adjusting the time on your G-Shock watch, you can hunt up the owner’s manual for your specific model number online.

On the back of every Casio G-Shock, new or old, is a four-digit model number that links to a manual. For help, either enter the model number on the official Casio website, or type it and “Casio G-Force” together in a search engine to get more results.

G-Shock watch features

Customers prefer the G-Shock line watches because of their durability, which includes shock and water resistance. For individuals who enjoy swimming or diving, the G-Shock GST-B100D-1ACR model, for instance, offers up to 200 feet of water resistance. Additionally, it is totally shock-proof.

A full calendar mode, an eight-month battery life, and programmable daily alarms and signals are just a few of the additional features of this and many other G-Shock models. While different models are made of various materials, many feature a durable stainless-steel frame and mineral glass.

Misha Khatri
Misha Khatri is an emeritus professor in the University of Notre Dame's Department of Chemistry and Biochemistry. He graduated from Northern Illinois University with a BSc in Chemistry and Mathematics and a PhD in Physical Analytical Chemistry from the University of Utah.


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