Casio QW-1625 Quick Start Manual Download Page 1

- 2 -

2. OPERATION CHART : MODULE QW-1625

GENERAL GUIDE

• Press 

to change from mode to mode. After you perform an operation in any mode, pressing 

returns to the Timekeeping Mode.

• In any mode (except when making settings) press 

to illuminate the display for about two seconds.

Thermometer Mode

Alarm Mode

Timekeeping Mode

Countdown 

Alarm Mode

Trekking

Counter Mode

TIMEKEEPING MODE

To set the time and date

1. Hold down 

while in the Timekeeping Mode

until the seconds digits flash on the display
because they are selected.

2. Press 

to change the selection in the following

sequence.

3. While the seconds digits are selected (flashing),

press 

to reset the seconds to 00. If you press

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.

Month 

and Day

Minutes

PM
indicator

Day of
week

Seconds

Day

Month

Year

Hour

Minutes

12/24-Hour

Format

Day of

week

Hour

Seconds

Temperature
graph

4. While any other digits (beside seconds) are selected (flashing), press 

to increase

the number or 

to decrease it. While the day of the week is selected, press 

to

advance to the next day and 

to move back. While the 12/24-hour format setting

is selected, press 

to toggle it between 12 and 24.

• Except for when adjusting the seconds or setting the 12/24-hour format, holding

down a button changes the current selection at high speed.

• When the 12-hour format is selected, the indicator appears on the display to

indicate “A.M.” times or indicator appears on the display to indicate “P.M.” times.
Selecting the 24-hour format causes the indicator 24 to appear on the display.

5. After you set the time and date, press 

to return to the Timekeeping Mode.

• The date can be set within the range of January 1, 1995 to December 31, 2039.
• 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 Mode automatically.

ABOUT THE BACKLIGHT

About the Auto Backlight Function

When the auto backlight function is turned on, the backlight automatically turns on for
two seconds under the conditions described below. Avoid wearing the watch on the
inside of your wrist. Doing so causes the auto backlight to operate when not needed,
which shortens battery life.

Moving the watch to a position that is parallel to the ground and then tilting it 
towards you approximately 40 degrees causes the backlight to illuminate.

Parallel to
ground

• The backlight may not illuminate if the face of the watch is more than 15 degrees off

parallel to the left or right. Make sure that the back of your hand is parallel to the
ground.

• Static electricity or magnetic force can interfere with proper operation of the auto

backlight function. If the auto backlight does not illuminate, try moving the watch
back to the starting position (parallel with the ground) and then tilt it back toward you
again. If this does not work, drop your arm all the way down so it hangs at your side,
and then bring it back up again.

• Under certain conditions the backlight may not light until about one second or less

after turn the face of the watch towards you. This does not necessarily indicate
malfunction of the backlight.

Parallel to ground

More than 15 degrees
too high

More than 15 degrees
too low

To switch the auto backlight function on and off

In the Timekeeping Mode, hold down 

for one or two seconds to turn the auto

backlight function on and off.

• The auto backlight indicator is shown on the display in all modes while the auto

backlight function is on.

• In order to protect against running down the battery, the auto backlight function is

automatically turned off approximately three hours after you turn it on. Repeat the
above procedure to turn the auto backlight function back on if you want.

• Pressing 

at any time illuminates the display for about two seconds, regardless of

the auto backlight's on/off setting.

Holding down 

OFF

ON

Auto backlight indicator

Caution

• The backlight of this watch employs an electro-luminescent (EL) light, which loses its

illuminating power after very long term use.

• Frequent use of the backligfht shortens the battery life.
• The watch emits an audible sound whenever the display is illuminated. This is because the

EL light vibrates slightly when lit. It does not indicate malfunction of the watch.

Warning!

• Never try to read your watch when mountain climbing or hiking in areas that are dark

or in areas with poor footing. Doing so is dangerous and can result in serious
personal injury.

• Never try to read your watch when running on a roadside or in any other location

where there might be vehicular or pedestrian traffic. Doing so is dangerous and can
result in serious personal injury.

• Never try to read your watch when riding on a bicycle or when operating a motorcycle

or any other motor vehicle. Doing so is dangerous and can result in a traffic accident
and serious personal injury.

• When you are wearing the watch, make sure that its auto backlight function is turned

off before riding on a bicycle or operating a motorcycle or any other motor vehicle.
Sudden and unintended operation of the auto backlight can create a distraction,
which can result in a traffic accident and serious personal injury.

THERMOMETER MODE

A built-in temperature sensor measures temperature and shows the measured value
on the display. The readout from the temperature sensor can also be switched
between Celsius (˚C) and Fahrenheit (˚F). The thermometer can be calibrated to
correct for errors.

Important!

Temperature measurements are affected by your body temperature (while you are
wearing the watch), direct sunlight, and moisture. To achieve a more accurate
temperature measurement, remove the watch from your wrist, place it in a well
ventilated location out of direct sunlight, and wipe off all moisture from the case. It
takes approximately 20 to 30 minutes for the case of the watch to reach the actual
surrounding temperature.

Accurate temperature measurements cannot be achieved while you are wearing the
watch. The following graph illustrated affects of body temperature on actual
temperature.

Temperature

Temperature measured when watch is worn on wrist

40 C

30 C

20 C

10 C

0 C

10 C

20 C

30 C

40 C

Approximate

Differences caused by
individual body
temperture or clothing

About Temperature Measurement

• A temperature graph which is automatically updated every five minutes, is shown on

the display in all modes (except when making settings). Measured temperature
values can be viewed in the Thermometer Mode only.

• Pressing 

while in the Thermometer Mode

performs temperature measurement and causes
the measured value to appear on the display.

The display shows “– – . – ˚C (or ˚F)” if a
measured value falls outside the range of –20˚C
to 60˚C (–4˚F to 140˚F). The normal display will
return as soon as the temperature returns within
the allowable range.

Current

temperature

Mode
indicator

Temperature

graph

Switching between Celsius and Fahrenheit

1. Hold down 

while in the Thermometer Mode

and the current temperature digits flash.

2. Press 

to select either Celsius “˚C” or

Fahrenheit “˚F”.

3. After you select the Celsius or Fahrenheit, press

to return to the Temperature Display.

• 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 Thermometer Mode
automatically.

Flashes

C

C

C

C

D

D

D

D

D

D

D

D

B

B

B

B

A

A

A

A

40˚

Reviews: