Open as PDF
Module No. 1632/1813
• If the contents of the upper part of the display seem to be continually
changing, see “AUTO DISPLAY FUNCTION” for information on how to
• The operational procedures for modules 1632 and 1813 are identical. All of
the illustrations in this manual show module 1632.
• Press M to change from mode to mode.
• Press L in any mode to illuminate the display for about one second.
• When the text in the text area of the display contains more than five
characters, it automatically scrolls. Text scrolling in the text area stops
moving whenever an alarm is sounding.
• In any mode other than Stopwatch Mode, the watch automatically returns to
the Timekeeping Mode if you do not perform any button operation for two or
Vital Statistics/ID Mode
In addition to normal timekeeping, the Timekeeping
Mode is also used to set the current time and
date. You can also adjust the seconds count to
“00” at any time by pressing two buttons.
To adjust the seconds count to
In the Timekeeping Mode, press B and C
simultaneously to adjust the seconds count to
• If you press B and C at the same time while
the seconds count is in the range of 30 to 59, the
seconds are reset to
00 and 1 is added to the
minutes. If the seconds count is in the range of
00 to 29, the minutes count is unchanged.
To set the time and date
1. Hold down A while in the Timekeeping Mode until the seconds digits start
to flash on the display. The seconds flash because they are
• While the seconds digits are selected (flashing), press C to reset the
2. Press M to change the selection in the following sequence.
Seconds Hour Minutes
Year Month Day
3. While any other digits (besides seconds) are selected (flashing), press C
to increase the number or B to decrease it. Holding down either button
changes the current selection at high speed.
• While any digits are selected, press L to switch between the 12-hour and
• When the 12-hour format is selected, the
12H indicator appears in the text
area of the display. With the 12-hour format, the P indicator appears on the
display to indicate “p.m.” times. There is no indicator for “a.m.” times.
Selecting the 24-hour format causes the
24H indicator to appear in the
text area, and the 24 indicator to appear on the display.
4. After you set the time and date, press A to return to the Timekeeping
• The day of the week is automatically set in accordance with the date.
• The date can be set within the range of January 1, 1995 to December 31,
• If you do not operate any button for a few minutes while a selection is
flashing, the flashing stops and the watch goes back to the Timekeeping
This watch features an electroluminescent (EL)
backlight that helps you easily read the face, even
in total darkness. Its Auto Light Switch function
automatically lights the watch face whenever you
turn your wrist towards your face.
• The backlight of the watch employs an
electroluminescent (EL) light, which loses
illuminating power after very long use.
• Frequent use of the backlight shortens the battery life.
• The illumination provided by the backlight may be hard to see when viewed
under direct sunlight.
• The watch will emit an audible sound whenever the display is illuminated.
This is caused by a transformer that vibrates when the EL panel lights up. It
does not indicate malfunction of the watch.
• The backlight automatically turns off whenever an alarm sounds.
To manually turn on the backlight
In any mode, press L to illuminate the display for about one second.
To turn the Auto Light Switch function on and off
In the Timekeeping Mode, hold down C for one or two seconds to turn the
Auto Light Switch function on and off.
• The Auto Light Switch on indicator is shown on the display in all modes
while the Auto Light Switch function is on.
• In order to protect against running down the battery, the Auto Light Switch
function is automatically turned off approximately two hours after you turn it
on. Repeat the above procedure to turn the Auto Light Switch function back
on if you want.
• Pressing L in any mode illuminates the display for about one second,
regardless of the Auto Light Switch function on/off setting.
About the Auto Light Switch function
While the Auto Light Switch function is turned on, the backlight automatically
lights for about one second in any mode whenever you position your wrist as
Avoid wearing the watch on the inside of your wrist. Doing so causes the Auto
Light Switch to operate when it is not needed, which shortens battery life.
Auto Light Switch
Day of week
Hour : Minutes
Month – Day