I have a timex 1440 .It is set in 24 hour mode. I am not aqble to change to 12 hour mode.

To set the time on your Timex 1440 Watch, please follow these directions:

1. Press and hold MODE (Upper left button)
(HOURS will flash and you'll be in Alarm Mode).

2. Press MODE again to enter TIME mode.
(SECONDS digits will flash.)

3. Press ADJUST (bottom right button) to set SECONDS to zero.

4. Press START/STOP (upper right button) to select MINUTES

5. Press ADJUST to change

6. Repeat to set Hours, Date, Month, and Day of the week.
(Go through 12 hours to set AM or PM)

7. Press MODE when finished

8. To display DATE from TIME display, press START/STOP

9. With DATE displayed, press and hold START/STOP, then press ADJUST to change display between DATE-MONTH

10. With TIME displayed, press and hold ADJUST, then press MODE to switch between 12 and 24 hour format.
I hope you are now able to set the time on your watch! If you appreciate these instructions, please remember to rate this post.

--Sandy

There are several models of your watch not all of which appear to have a 12/24 hour display format.

Try this extract from a manual; press the MODE button six times to enter the 12/24 adjusting setting and then use the START/STOP or SPLIT/RESET button to change the time.

Press the mode button to return to normal operation.

Try this:
To set time and date:
1) With time and date showing, press SET.
2) Seconds ?ash. Press START/STOP to round time to nearest minute,
setting seconds to zero.
3) Press MODE. Hour ?ashes. Press START/STOP to change hour,
including AM (no symbol) and PM.
4) Press MODE. Minutes ?ash. Press START/STOP to change minutes;
hold button to scan values.
5) Press MODE. Month ?ashes. Press START/STOP to change month.
6) Press MODE. Date ?ashes. Press START/STOP to change date.
7) Press MODE. Day ?ashes. Press START/STOP to change day.
8) Press MODE. Time format ?ashes. Press START/STOP to select
12- or 24-hour time format. 12-hour format has AM/PM.
9) Press SET, at any step, to exit and save settings.
Date (day of month) appears in upper part of display in Time mode.
Press and hold START/STOP to see month and date in large digits.

Click on my profile (escapement), then click on Tips and Tricks. There you will find link to all TIMEX watch manuals.

Hi bowingman,

To use 12- or 24-hour time for your watch, please follow the instructions below.

1. Press and hold the "Set" button for 2 seconds. The "Set" button is on the lower right side.

2. Press the "Date Advance" button on the upper right side. This will reset the seconds.

3. Press the "Change Mode" button on the lower left to set the hour. The hour will flash. Press the "Date Advance" button until the correct hour is displayed.

4. Press the "Change Mode" button again to set the correct 10s unit (first digit 1 or 0) for the minutes. Press the "Date Advance" button until the correct first digit of the minutes is displayed. Repeat this step to set the second digit of the minutes.

5. Repeat Steps 1 through 4 of this section to set the year, month, date and day and whether to use 12- or 24-hour time for your watch.

6. When finished, press the "Set" button (on the lower right) to return to the current time view and lock in your settings.

Hope it helps.

Thank you for using FixYa.

Hi bud76502,

To use 12- or 24-hour time for your watch, please follow the instructions below.

1. Press and hold the "Set" button for 2 seconds. The "Set" button is on the lower right side.

2. Press the "Date Advance" button on the upper right side. This will reset the seconds.

3. Press the "Change Mode" button on the lower left to set the hour. The hour will flash. Press the "Date Advance" button until the correct hour is displayed.

4. Press the "Change Mode" button again to set the correct 10s unit (first digit 1 or 0) for the minutes. Press the "Date Advance" button until the correct first digit of the minutes is displayed. Repeat this step to set the second digit of the minutes.

5. Repeat Steps 1 through 4 of this section to set the year, month, date and day and whether to use 12- or 24-hour time for your watch.

6. When finished, press the "Set" button (on the lower right) to return to the current time view and lock in your settings.

Hope it helps.

Thank you for using FixYa.

TIME AND DATE
1. Press and hold MODE until HOURS digits flash (you'll be in Alarm Mode) Press MODE again to enter TIME mode, SECONDS digits will flash.
2. Press ADJUST to set SECONDS to zero.
3. Press START/STOP to select MINUTES.
4. Press ADJUST to change.
5. Repeat to set HOURS, MONTH, DAYS, and DAY of WEEK. Go through 12 hours to set AM or PM.
6. Press MODE when done.
7. To display DATE from Time display , press START/STOP.
8. With DATE displayed press and hold START/STOP, then press ADJUST to change display between DATE-MONTH and MONTH-DATE.
9. With TIME displayed, press and hold ADJUST, then press MODE to switch between 12-and 24-hour format.

ALARM AND HOURLY CHIME
1. Press and hold MODE until HOURS digits, DAY, and A or P (for AM or PM) flash.
2. Press ADJUST to change HOURS digits. Go through 12 hours for AM or PM.
3. Press START/STOP to select MINUTES.
4. Press ADJUST to change.. Press MODE when done.
5. Press and hold ADJUST, then press START/STOP to turn chime on/off. Press START/STOP again to turn alarm on /off. Release START/STOP when done.

CHRONOGRAPH
1. Chronograph will count up to 24 hours. Lap times are not stored. After 40 minutes chrono display changes from seconds to minutes.
2. With time displayed, press MODE to select Chrono Mode.
3. Press START/STOP to start.
4. Press ADJUST to view lap time. Press again to sesume lap timing.
5. Press START/STOP to stop timing . Press ADJUST to reset chrono to zero.
6. Repeat for successive laps.

With TIME displayed, press and hold ADJUST, then press MODE to switch between 12- and
24-hour format.

If your set up is: Top-Left=Indiglo Top-Right=St./Stop Bottom-Left=Mode Bottom-Right=Lap/Reset

Than follow these steps:
1. Press Lap/Reset and hold. You should see the time the alarm was set for.
2. While holding Lap/Reset, press Mode.
3. Let go of all buttons.
4. There you go!

Hope that was a help

These are settings for the Timex SPORTS 1440 Magnetism (5b841 -W163US)
These are for the 4 button SPORTS 1440 (not 6 button) - they will also work for the 1440 SPORTS "Informer" model wrist watch - you will NOT find these instructions on the Timex website - only the 6 button which will not work on these watches is on that site!

TIME AND DATE

1. Press and hold MODE until HOURS digits flash (you'll be in Alarm Mode) Press MODE again to enter TIME mode, SECONDS digits will flash.
2. Press ADJUST to set SECONDS to zero.
3. Press START/STOP to select MINUTES.
4. Press ADJUST to change.
5. Repeat to set HOURS, MONTH, DAYS, and DAY of WEEK. Go through 12 hours to set AM or PM.
6. Press MODE when done.
7. To display DATE from Time display , press START/STOP.
8. With DATE displayed press and hold START/STOP, then press ADJUST to change display between DATE-MONTH and MONTH-DATE.
9. With TIME displayed, press and hold ADJUST, then press MODE to switch between 12-and 24-hour format.

ALARM AND HOURLY CHIME

1. Press and hold MODE until HOURS digits, DAY, and A or P (for AM or PM) flash.
2. Press ADJUST to change HOURS digits. Go through 12 hours for AM or PM.
3. Press START/STOP to select MINUTES.
4. Press ADJUST to change.. Press MODE when done.
5. Press and hold ADJUST, then press START/STOP to turn chime on/off. Press START/STOP again to turn alarm on /off. Release START/STOP when done.

CHRONOGRAPH

1. Chronograph will count up to 24 hours. Lap times are not stored. After 40 minutes chrono display changes from seconds to minutes.
2. With time displayed, press MODE to select Chrono Mode.
3. Press START/STOP to start.
4. Press ADJUST to view lap time. Press again to sesume lap timing.
5. Press START/STOP to stop timing . Press ADJUST to reset chrono to zero.
6. Repeat for successive laps.

Have fun! - Not a bad watch for the money! - - Silver Bullet