Setting 24 hour mode

1. Continue to press the MODE button until the second digits blink.
2. Click the START button to reset the seconds to zero (00).
3. Press the RESET button and the minute digits will blink.
4. Click the START button to set the minutes. Hold down on the button to increase the speed.
5. Press the RESET button and the hour digits will blink.
6. Click the START button to set the hours.
7. You can select between 12-hour and 24-hour display modes. A "P" indicator signifies it to the afternoon 12-hour setting, a "A" indicate in the morning and a "H" means that it is the 24-hour setting.
8. Continue this pattern to set the day of the month, month, and day of the week, respectively. 9 Press the MODE button to finish and exit.

1. Press [A], the top left button, and the seconds should start flashing 2. Once you have some digits flashing, press [D], bottom middle button, and will switch between the 12h/24h formats 3. Wait a few seconds and the digits should stop flashing and return from the time set mode, to timekeeping mode.
Here is a link to a manual directly from Casio, showing you all of these steps. As per the explanation on top of the manual, this should work with 3 different models of Casio watches, including yours. http://ftp.casio.co.jp/pub/world_manual/wat/en/qw1659.pdf

Have a good day

You have to press the ADJUST button then you hold down the MODE button and while you are holding down the MODE button press the G (illuminator button)

mcdevito75 here, You should be able to thru the MODE button. Best Bet, contact Casio at 800-706-2534 Optn. 2 hope this helps.

Check out my tips here and find the instructions manual for your watch

The hands are set independent from the digital display

Setting CASIO G-Shock Watch

1) Home City
2) Setting the digital time
3) Adjusting hands
4) Alarm set/on/off
5) Snooze
6) Hourly Chime

A -- B
( ) Button reference
C __ D

1) Select home city first (if equiped):
Press C until regular timekeeping mode is reached. Hold A until seconds flash. Press C to get to city code. Use B and D to move city east or west to your home city. Press A to set and exit.
Press C until timekeeping mode is reached (high beep).

2) Set time, Date, etc:
Hold A until seconds flash. Press C until item to adjust is flashing. Press B or D to adjust. Press C to go to next item. Press B or D to adjust. Press A to exit.

3) Adjust hands (if equiped):
Press C until H-Set is reached. Hold A until time flashes. Press D to advance minute hand. Press B while holding D to set faster and continuously. Press D to stop hands before correct analog time is reached. Press D to step to current time (hands only go forward). Press A to exit H-Set mode. Press C to return to timekeeping mode.

In Timekeeping mode B is illumination and D is time/day/date display advance.

4) Alarm set/on/off
Press C until alarm mode is reached (AL1 - AL4 + SNZ and SIG). Press D to select alarm to adjust. Hold A until alarm time flashes. Press B or D to adjust alarm time. Press C to toggle between hour and minutes set. Press A to exit. Press A to turn alarm on and off. Repeat for AL2 - AL4. Press C to return to Timekeeping mode.
To stop any alarm, press any button.

5) Snooze (SNZ):
Press C until alarm mode is reached (AL1 - AL4 + SNZ and SIG). Press D to select snooze alarm (SNZ). Hold A until snooze alarm time flashes. Press B or D to adjust snooze alarm time. Press C to toggle between hour and minutes set. Press A to exit. Press A to turn snooze alarm on and off. Press C to return to Timekeeping mode.
To cancel the next snooze: Press C until the timekeeping screen is reached or go to the Snooze alarm (SNZ) screen.

6) Hourly Chime (SIG):
Press C until alarm mode is reached (AL1 - AL4 + SNZ and SIG).
Press D to select hourly chime (SIG). Press A to toggle chime on and off.
Press C to return to Timekeeping mode.

Good luck,
Techjoel

Setting CASIO G-Shock Watch

1) Home City
2) Home city and Setting the digital time
3) Adjusting hands
4) Alarm set/on/off
5) Snooze
6) Hourly Chime

A -- B
( ) Button reference
C __ D

1) Select home city first (if equiped):
Press C until regular timekeeping mode is reached. Hold A until seconds flash. Press C to get to city code. Use B and D to move city east or west to your home city. Press A to set and exit.
Press C until timekeeping mode is reached (high beep).

2) Set time, Date, etc:
Hold A until seconds flash. Press C until item to adjust is flashing. Press B or D to adjust. Press C to go to next item. Press B or D to adjust. Press A to exit.

3) Adjust hands (if equiped):
Press C until H-Set is reached. Hold A until time flashes. Press D to advance minute hand. Press B while holding D to set faster and continuously. Press D to stop hands when correct analog time is reached. Press A to exit H-Set mode. Press C to return to timekeeping mode.
In Timekeeping mode B is illumination and D is time/day/date display advance.

4) Alarm set/on/off
Press C until alarm mode is reached (AL1 - AL4 + SNZ and SIG). Press D to select alarm to adjust. Hold A until alarm time flashes. Press B or D to adjust alarm time. Press C to toggle between hour and minutes set. Press A to exit. Press A to turn alarm on and off. Repeat for AL2 - AL4. Press C to return to Timekeeping mode.
To stop any alarm, press any button.

5) Snooze (SNZ):
Press C until alarm mode is reached (AL1 - AL4 + SNZ and SIG). Press D to select snooze alarm (SNZ). Hold A until snooze alarm time flashes. Press B or D to adjust snooze alarm time. Press C to toggle between hour and minutes set. Press A to exit. Press A to turn snooze alarm on and off. Press C to return to Timekeeping mode.

To cancel the next snooze: Press C until the timekeeping screen is reached or go to the Snooze alarm (SNZ) screen.

6) Hourly Chime (SIG):
Press C until alarm mode is reached (AL1 - AL4 + SNZ and SIG).
Press D to select hourly chime (SIG). Press A to toggle chime on and off.

Press C to return to Timekeeping mode.

Good luck,
Techjoel

Follow this link and find out what you want:

http://world.casio.com/wat/download/en/manual/

Rate me, please.

Not a direct solution but you can get the electronic manual for free from http://world.casio.com/wat/download/en/manual/

ANALOG TIME
Pull CROWN and turn to set HOUR and MINUTE hands. TIME AND DATE A. Press and hold SET. SECONDS digits will flash. B. Press SPLIT/RESET to set SECONDS to zero. C. Press MODE to select HOURS. D. Press SPLIT/RESET to advance hours digits. Go through 12 hours for AM or PM. E. Press MODE to select MINUTES, press SPLIT/RESET to advance. F. Repeat to set MONTH, DATE, DAY, 12- or 24-hour time display. G. Press SET when done. BASIC OPERATIONS Press MODE to cycle through CHRONO, TIMER, and ALARM modes. Press INDIGLO to illuminate watch face. In any mode, press MODE to view time display. Press any button to stop alarm or timer beeps. INDIGLO INDIGLO CHRONOGRAPH A. Press MODE until CHRONO appears. B. Press START/STOP to start. C. Press SPLIT/RESET to record lap time. Display pauses. D. Press MODE to resume display of lap and split time (automatic after 10 seconds). E. Press START/STOP to pause chrono. F. Press START/STOP to resume. G. Press START/STOP to stop. H. When timing is stopped, press SPLIT/RESET repeatedly to recall last eight lap and split times. I. Press and hold SPLIT/RESET to reset chrono. MODE MODE START/ STOP START/ STOP SPLIT/ RESET SPLIT/ RESET SET SET CROWN COUNTDOWN TIMER A. Press MODE until TIMER appears. B. Press SPLIT/RESET to select timer operation (Countdown and Stop; Countdown and Repeat; Countdown and Start chrono). C. Press SET. HOURS digits will flash. Press SPLIT/RESET to advance digits. D. Press MODE to select TENS of MINUTES. Press SPLIT/RESET to advance. E. Repeat to set MINUTES, TENS of SECONDS, and SECONDS. F. Press SET when done. G. Press START/STOP to start timer. H. Press START/STOP to pause, press again to resume. I. When timer is stopped, press SPLIT/RESET to reset timer. Watch will beep when countdown reaches zero. ALARM AND CHIME A. Press MODE until ALARM appears. B. Press SET to select HOURS. Digits will flash. C. Press SPLIT/RESET to advance digits. Go through 12 hours for AM or PM. D. Press MODE to select TENS of MINUTES. E. Press SPLIT/RESET to advance. Repeat for MINUTES. F. Press SET when done. G. Press START/STOP to turn alarm on or off. H. Press SPLIT/RESET to turn chime on or off. When alarm time is reached, watch will beep for 20 seconds, or until any button is pushed. Alarm will repeat every 24 hours until deactivated. INDIGLO® NIGHT-LIGHT WITH NIGHT-MODE® FEATURE A. Press INDIGLO to activate light. Patented (U.S. Patent Numbers 4,527,096 and 4,775,964) electroluminescent technology used in the INDIGLO® night-light illuminates watch face at night and in low light conditions. B. Press and hold INDIGLO for three seconds (beep will sound) to activate or de-activate NIGHT-MODE® feature. C. While in NIGHT-MODE® feature, press any button to illuminate watch face for 3 seconds. Chime on Alarm on If your watch is water-resistant, meter marking or ( ) is indicated. Water-Resistance Depth p.s.i.a.* Water Pressure Below Surface 30m/98ft 60 50m/164ft 86 100m/328ft 160 *pounds per square inch absolute WATER AND SHOCK RESISTANCE WARNING: TO MAINTAIN WATER-RESISTANCE, DO NOT PRESS ANY BUTTONS UNDER WATER. 1. Watch is water-resistant only as long as lens, push buttons and case remain intact. 2. Watch is not a diver watch and should not be used for diving. 3. Rinse watch with fresh water after exposure to salt water. 4. Shock resistance will be indicated on the watch face or caseback. Watches are designed to pass ISO test for shock resistance. However, care whould be taken to avoid damaging crystal.