G shock light when pressed gives a untimely blink like the bulb is about to blow

If you mean switch from 12h to 24h and vv,all you have to do is to press the "ADJUST" button until digits on the display blink.Then press the "MODE" button until 12H blinking appears.Press the "START-STOP" button to switch to 24H.When finished press the "ADJUST" button again.

press and hold the adjust button, then the seconds blinks (blinking digit is changeable) press mode to choose for the minute to be change. when you are done just press the adjust button once. i hope i had been helped you.

IN THE OUTER PROFILE YOU HAVE FOUR BUTTONS,JUST PRESS THE TIME/DATE BUTTON AND IN THE CENTRE OF THE WATCH YOU FIND THE DAY(EG:SUNDAY)IS BLINKING,JUST PRESS THE OPPOSITE SIDE BUTTONS TO CHANGE THEDATE,AFTER CHANGING DAY,AGAIN PRESS THE DATE/TIME BUTTON NOW APPEARS THE TIME BUTTON(EG:11.00 HRS),NOW PRESS THE OPPOSITE SIDE BUTTON FOR CHANGING ......
THANKING YOU.........GOOD DAY

Setting the Time
1. G-Shock watches feature a digital display that is set using the function buttons on the outside of the watch face. To set the time, press and hold the the upper left button until the seconds unit blinks on the display. Reset the seconds to "00" by pressing the lower right button.
   
   Push the lower left button to switch to the hours unit, which will start blinking. Advance the hour by pressing the lower right button. If you hold down the lower right button, it will advance the hour unit at a higher rate of speed. Once the hour is set, press the lower left button to switch to the minutes unit. As with the hours unit, pressing the lower right button will advance the minutes and holding it down will advance the minutes rapidly.
   
   Once the time is set, press the upper left button to save the setting.
Backlight
2. The backlight on a G-Shock watch has a manual control and an automatic function that will light the face of the watch whenever the alarm, countdown alarm or hourly alarm ring. To use the manual backlight, press the button on the bottom of timepiece. The light will glow for approximately 2 seconds before going out.
   
   The automatic function is set by pressing and holding the lower right button. When the automatic function is set, an indicator icon will display on the watch face above the seconds unit. You can turn off the automatic backlight function by pressing and holding the lower right button until the icon disappears.
   
   Note that backlight causes a drain on the battery, and overuse of the backlight will greatly reduce battery life.
Setting the Alarm
3. The G-Shock has an alarm that emits an audible tone for approximately 20 seconds when it turns on. To set the alarm, press the lower left button until "AL" displays in the upper left corner of the timepiece. Press and hold the upper left button until the hours unit starts to blink. Adjust the hour by pressing the lower right button. As when setting the time, you can advance the hour at a higher rate of speed by holding down the lower right button.
   
   Once the hour unit is set, press the lower left button to advance to the minutes. Use the lower right button to set the minutes. Follow these same instructions to set the month and day you want the alarm set.
   
   When the alarm time and date are entered, press the upper left button to save the setting. Push the lower left button three times to return the G-Shock to "Timekeeping" mode.

Setting the Time
1. G-Shock watches feature a digital display that is set using the function buttons on the outside of the watch face. To set the time, press and hold the the upper left button until the seconds unit blinks on the display. Reset the seconds to "00" by pressing the lower right button.
   
   Push the lower left button to switch to the hours unit, which will start blinking. Advance the hour by pressing the lower right button. If you hold down the lower right button, it will advance the hour unit at a higher rate of speed. Once the hour is set, press the lower left button to switch to the minutes unit. As with the hours unit, pressing the lower right button will advance the minutes and holding it down will advance the minutes rapidly.
   
   Once the time is set, press the upper left button to save the setting.
Backlight
2. The backlight on a G-Shock watch has a manual control and an automatic function that will light the face of the watch whenever the alarm, countdown alarm or hourly alarm ring. To use the manual backlight, press the button on the bottom of timepiece. The light will glow for approximately 2 seconds before going out.
   
   The automatic function is set by pressing and holding the lower right button. When the automatic function is set, an indicator icon will display on the watch face above the seconds unit. You can turn off the automatic backlight function by pressing and holding the lower right button until the icon disappears.
   
   Note that backlight causes a drain on the battery, and overuse of the backlight will greatly reduce battery life.
Setting the Alarm
3. The G-Shock has an alarm that emits an audible tone for approximately 20 seconds when it turns on. To set the alarm, press the lower left button until "AL" displays in the upper left corner of the timepiece. Press and hold the upper left button until the hours unit starts to blink. Adjust the hour by pressing the lower right button. As when setting the time, you can advance the hour at a higher rate of speed by holding down the lower right button.
   
   Once the hour unit is set, press the lower left button to advance to the minutes. Use the lower right button to set the minutes. Follow these same instructions to set the month and day you want the alarm set.
   
   When the alarm time and date are entered, press the upper left button to save the setting. Push the lower left button three times to return the G-Shock to "Timekeeping" mode.

mcdevito75 here, Generally you need to press the MODE button, seee the display blinking now press set for each function, Hour, Minute after each function is set press mode to move onto next. when all set press mode again for steady display.

mcdevito75 here, One of the buttons should say MODE, press this button and see the display blinking, NOW, press set for each function you want to adjust, Hour, Minute etc, press MODE after each function is set, Hour, then Minute, when done with setting all functions, press MODE again for a steady display. Look for a small watch repair shop in your area for more help if needed.

All Casio manuals are available for download at Casio.com under the support tab.

Thanks!

Press Adjust and hold until blinking city appears.
Press Mode until DST appears flashing.
Press Recieve until mode that you want appears ON OFF AUTO
Press Adjust until not blinking city code.

I don't know how much significance this post would make to any now, but I was playing with the watch trying to figure out how to set the time and I have figured it out...

1. Hold the "Adjust" button until where it displays the day of the week starts blinking (This will display the major airport in your area to determine your time zone, mine is "LAX"...to change this, while it is still blinging press either "Time Memo" or "Recieve" to move up or down)

2. Press "Adjust" again so you see "12H" (I guess meaning 12 hour intervals)

3. Press "Mode" (at this point your seconds will start blinking) to change these, againg press "Time Memo" or "Recieve" to move up or down. (usually I skip past the seconds)

4. Repeat step 3 to do your hours, minutes, year, then the date...(order is as follows)

5. When you are done press "Adjust" then everything will stop blinking, and you are done


This is as much as I figured out and I hope this is helpful to anyone that needs it...