User Manual
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4. Press A twice to exit the setting screen.
• The day of the week is automatically displayed in accordance with the date
(year, month, and day) settings.
• The year can be set in the range of 2000 to 2039.
• The watch’s built-in full automatic calendar automatically makes allowances
for different month lengths and leap years. Once you set the date, there
should be no reason to change it except after you have the watch’s battery
replaced.
Daylight Saving Time (DST)
Daylight Saving Time (DST) automatically advances the time setting by one
hour from Standard Time. Whether you should use Daylight Saving Time
depends on the geographic area where you are currently located.
To toggle between DST and Standard Time
1. In the Timekeeping Mode, hold down A
until the seconds digits start to flash, which
indicates the setting screen.
2. Press C to move the flashing to the DST
setting.
3. Press D to toggle between Daylight
Saving Time (
ON) and standard time
(
OFF).
4. Press A twice to exit the setting screen.
• The DST indicator appears on the display to
indicate that daylight saving time is turned
on.
Adjusting Display Contrast
Use the following procedure to adjust the relative darkness of the display
figures.
To adjust display contrast
1. In the Timekeeping Mode, hold down A
until the seconds digits start to flash, which
indicates the setting screen.
2. Press C eight times to move the flashing
to the contrast setting.
3. Use D (+) and B (–) to change the
contrast setting.
• You can set a value from
0 (lightest) to 10
(darkest).
4. Press A twice to exit the setting screen.
THERMOMETER
A built-in temperature sensor measures air temperature and water
temperature and the measurement result is shown on the display. You can
calibrate the temperature sensor if you suspect the temperature reading is
incorrect.
Interpreting the Temperature Screen
Use C to enter the Timekeeping Mode and
then press D to display the Temperature
screen.
• While a surface interval measurement is in
progress, pressing D initially displays the
Surface Interval screen. Press D again to
advance to the Temperature screen.
• After about six seconds, the watch returns
to the Timekeeping screen from the
Temperature screen. You can return to the
Timekeeping screen manually by pressing
D.
• The displayed temperature value changes to
xxx.x°C (or °F) if a measured
temperature falls outside the range of –10.0°C to 60.0°C (14.0°F to 140.0°F).
The normal temperature value reappears as soon as the measured
temperature is within the allowable range.
About Temperature Measurements
• Whenever you display the Temperature screen or enter the Diving Mode,
the watch performs a temperature measurement and displays the result on
the screen. The watch continues to take temperature measurements every
30 seconds in the Diving Mode.
• Air 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 all
moisture from the case. It takes approximately 20 to 30 minutes for the
case of the watch to reach the actual surrounding temperature.
• Wearing the watch on your wrist has almost no effect on water temperature
measurements. In the case of sudden extreme changes in water
temperature, however, it takes about five minutes for the temperature of
the watch to match the water temperature.
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Temperature
• See “DIVING FUNCTIONS” for information about the temperature display
in the Diving Mode.
• You can select either Celsius (°C) or Fahrenheit (°F) as the unit of
temperature measurement. See “To change the unit of temperature
measurement”.
ALARM
You can set a Daily Alarm that sounds at the
same time each day, while the alarm is turned
on. You can also turn on an Hourly Time
Signal that causes the watch to beep twice
every hour on the hour.
To set the alarm time
1. Use C to enter the Alarm Mode.
2. Hold down A until the hour digits of the
alarm time start to flash, which indicates
the setting screen.
• Displaying the alarm time setting screen
automatically turns on the Daily Alarm.
3. Press C to move the flashing between the settings shown below.
MinutesHour
4. While the hour or minutes setting is flashing, use D (+) and B (–) to
change it.
• When setting the alarm time using the 12-hour format, take care to set the
time correctly as am (A indicator) or pm (P indicator).
5. Press A to exit the setting screen.
Daily Alarm Operation
The alarm sounds at the preset time each day for about 20 seconds or until
you stop it by pressing any button.
• The alarm does not sound while the watch is in the Diving Mode.
To test the alarm
In the Alarm Mode, hold down D to sound the alarm.
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Hourly time signal
on indicator
Current time
Alarm time
Alarm on
indicator
Alarm On
Signal On
Alarm Off
Signal Off
Alarm Off
Signal On
Alarm On
Signal Off
[Alarm ON Indicator / Hourly Time Signal ON Indicator]
To turn the Daily Alarm and Hourly Time Signal on and off
In the Alarm Mode, press D to cycle through the on and off settings as
shown below.
DIVING FUNCTIONS
The pressure and temperature sensors of this watch provide a wealth of
useful diving data. Besides automatically measuring depths in the Diving
Mode, the watch also stores depth and temperature data into a Log Memory
for later recall.
• You can change the unit of measurement for displayed depth values
between meters (
l) and feet (F). See “To change the unit of depth
measurement”.
Important!
• The trigger depth for automatically starting and stopping depth and dive
time measurements in the Dive Mode is 1 meter (4 feet). Because of this,
the explanations in this manual use the term “submerged” to mean at a
depth deeper than 1 meter and the term “surface” to mean at a depth
shallower than 1 meter.
• Note that this watch also discriminates between “valid dives” and “invalid
dives” as described below.
Definition
• Submerged for at least two
or three consecutive minutes
• Submerged for less than two
or three consecutive minutes
• Insufficient depth
Description
• Starts measurement of the
surface interval when finished.
• Records log data for the dive.
• No surface interval measure-
ment when finished.
• No log data recorded
Dive Type
Valid Dive
Invalid Dive