Operation Guide 4734 4735
Illumination
Auto light switch on indicator
This watch has an EL
•The auto light switch must be turned on (indicated by the auto light switch on indicator) for it to operate.
•See “Illumination Precautions” for other important information about using illumination.
To turn on illumination manually
In any mode (except when a setting screen is on the display), press B to illuminate the display for about one second.
•The above operation turns on illumination regardless of the current auto light switch setting.
Thermometer
Temperature Sensor Calibration
The temperature sensor built into the watch is calibrated at the factory and normally requires no further adjustment. If you notice serious errors in the temperature readings produced by the watch, you can calibrate the sensor to correct the errors.
Important!
Incorrectly calibrating the temperature sensor can result in incorrect readings. Carefully read the following before doing anything.
•Compare the readings produced by the watch with those of another reliable and accurate thermometer.
•If adjustment is required, remove the watch from your wrist and wait for 20 or 30 minutes to give the temperature of the watch time to stabilize.
To calibrate the temperature sensor
Calibration value | 1. In the Timekeeping Mode, hold down Auntil the |
About the Auto Light Switch
Turning on the auto light switch causes illumination to turn on, whenever you position your wrist as described below in any mode, except for the Hand Setting Mode setting screen.
Moving the watch to a position that is parallel to the ground and then tilting it towards you more than 40 degrees causes illumination to turn on.
•Wear the watch on the outside of your wrist.
Parallel to | More than |
ground | 40° |
Warning!
•Always make sure you are in a safe place whenever you are reading the display of the watch using the auto light switch. Be especially careful when running or engaged in any other activity that can result in accident or injury. Also take care that sudden illumination by the auto light switch does not startle or distract others around you.
•When you are wearing the watch, make sure that its auto light switch is turned off before riding on a bicycle or operating a motorcycle or any other motor vehicle. Sudden and unintended operation of the auto light switch can create a distraction, which can result in a traffic accident and serious personal injury.
To turn the auto light switch on and off
In the Timekeeping Mode, hold down Dfor about three seconds to toggle the auto
light switch on ( 
displayed) and off ( 
not displayed).
•The auto light switch on indicator (
) is on the display in all modes while the auto light switch is turned on.
•In order to protect against running down the battery, the auto light switch will turn off automatically approximately six hours after you turn it on. Repeat the above procedure to turn the auto light switch back on if you want.
Reference
This section contains more detailed and technical information about watch operation. It also contains important precautions and notes about the various features and functions of this watch.
Moon Phase Indicator
The Moon phase indicator of this watch indicates the current phase of the Moon as shown below.
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| Moon phase indicator |
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| Module 4734 |
| Module 4735 |
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| (part you cannot see) | Moon phase (part you can see) | |||
Moon | Module |
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Phase | 4734 |
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Indicator | Module |
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Moon Age | 0.0 - 1.8 | 1.9 - 5.5 | 5.6 - 9.2 | 20.3 - 23.9 24.0 - 27.6 | ||
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| 27.7 - 29.5 |
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Moon Phase | New |
| First | Full | Last | |
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| Quarter | Moon | Quarter |
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| (Waning) |
•The Moon phase indicator shows the Moon as viewed at noon from a position in the Northern Hemisphere looking south. Note that at times the image shown by the Moon phase indicator may differ from that of the actual Moon in your area.
•The
Moon Phases and Moon Age
The Moon goes through a regular
*The angle to the Moon in relation to the direction at which the Sun is visible from the Earth.
This watch performs a rough calculation of the current Moon age starting from day 0 of the moon age cycle. Since this watch performs calculations using integer values only (no fractions), the margin for error of the displayed Moon age is ± 1 day.
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| seconds start to flash, which indicates the setting |
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l | l | l | ll | 2. Press Cnine times to display the temperature sensor | |
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• You can change the value in 0.1°C (0.2°F) steps, in a
range of ±10°C (±18°F). The calibration value shows
• To return the calibration value to its default (no calibration, indicated by ‘‘-
• Temperature sensor calibration will not be possible if the current reading is outside the allowable display range
• Setting a sensor calibration value does not affect temperature values that are already stored in memory.
4. After configuring the setting you want, press A twice to exit the setting screen.
To specify the temperature display unit
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| l | l | ll | 2. Press C10 times to display the temperature unit | ||
ll | setting screen. | |||||
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| l | 3. Use D to switch between Celsius ( ) and Fahrenheit | ||
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•The initial factory default and the initial default after
Temperature unit | battery replacement is Celsius ( ). |
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4. After configuring the setting you want, press A twice to exit the setting screen.
•The temperature display unit setting you select is also applied to temperature values that are already stored in memory.
Button Operation Tone
Mute indicator | The button operation tone sounds any time you press one | |
of the watch’s buttons. You can turn the button operation | ||
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| tone on or off as desired. |
•Even if you turn off the button operation tone, the alarm, Hourly Time Signal, and Countdown Timer Mode alarm all operate normally.
To turn the button operation tone on and off
In any mode (except when a setting screen is on the display), hold down Cto toggle the button operation tone on (
not displayed) and off (
displayed).
•Since the C button is also the mode change button, holding it down to turn the button operation tone on or off also causes the watch’s current mode to change.
• The 
indicator is displayed in all modes when the button operation tone is turned off.
Auto Return Feature
•If you leave a screen with flashing digits on the display without performing any operation for two or three minutes, the watch saves any settings you have made up to that point and exits the setting screen automatically.
•The watch will change to the Timekeeping Mode automatically if you do not perform any operation in the Hunting/Fishing Mode, Temperature Data Recall Mode, Alarm Mode, or Hand Setting Mode for two or three minutes.
Scrolling
The Band D buttons are used in various modes and setting screens to scroll through data on the display. In most cases, holding down these buttons during a scroll operation scrolls through the data at high speed.
Timekeeping
•Resetting the seconds to 00 while the current count is in the range of 30 to 59 causes the minutes to be increased by 1. In the range of 00 to 29, the seconds are reset to 00 without changing the minutes.
•With the
•With the
•The year can be set in the range of 2000 to 2099.
•The watch’s
World Time
•The seconds count of the World Time is synchronized with the seconds count of the Timekeeping Mode.
•All World Time Mode times are calculated from the current time in the Timekeeping
Mode using UTC time differential values.
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