Identify your G-Shock model number
Find the model-specific manual
Enter timekeeping mode
Hold the adjust button until settings flash
Use mode button to move between settings
Use start/stop or forward button to change values
Use reverse button to decrease values
Set seconds, hour, minute, year, month, and day
Confirm each setting with the adjust button
Exit settings mode
Set home city and time zone if needed
Enable or disable daylight saving time if needed
Set alarm mode if desired
Select alarm time
Turn alarm on or off
Set stopwatch mode if desired
Start, stop, and reset stopwatch
Set countdown timer mode if desired
Adjust countdown time
Start countdown timer
Sync with radio signal or Bluetooth if supported
Use the app for Bluetooth models
Replace battery if the display is dim or blank
Reset the watch after battery replacement if required