Operation Guide 4722
Illumination
An LED
• The auto light switch must be turned on for it to operate.
• See “Illumination Precautions” for other important information.
To illuminate the face of the watch
In Timekeeping mode (except when a setting screen is on the display), press B to illuminate the face of the watch.
•The above operation turns on illumination regardless of the current auto light switch setting.
About the Auto Light Switch
Turning on the auto light switch causes the face to illuminate, whenever you position your wrist as described below in any mode. Note that this watch features an “Auto LED Light,” so the auto light switch operates only when available light is below a certain level. It does not illuminate the face under bright light.
Moving the watch to a position that is parallel to the ground and then tilting it towards you at 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 face |
of 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 |
Illumination Precautions
•The illumination provided by the light may be hard to see when viewed under direct sunlight.
•Illumination automatically turns off whenever an alarm sounds.
•Frequent use of illumination shortens the battery operating time.
Auto light switch precautions
•Wearing the watch on the inside of your wrist, movement of your arm, or vibration of your arm can cause frequent activation of the auto light switch and illuminate the face of the watch. To avoid running down the battery, turn off the auto light switch whenever engaging in activities that might cause frequent illumination of the face.
•Note that wearing the watch under your sleeve while the auto light switch is turned on can cause frequent illumination of the face and can run down the battery.
More than 15 degrees | • Illumination may not turn on if the face of the watch is | |
more than 15 degrees above or below parallel. Make | ||
too high | ||
| sure that the back of your hand is parallel to the ground. |
•Illumination turns off after about 1.5 seconds, even if you keep the watch pointed towards your face.
•Static electricity or magnetic force can interfere with proper operation of the auto light switch. If illumination does not turn on, try moving the watch back to the starting position (parallel with the ground) and then tilt it back towards your face 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, illumination may not turn on until about one second after you turn the face of the watch towards you. This does not necessarily indicate malfunction of the auto light switch.
•You may notice a very faint clicking sound coming from the watch when it is shaken back and forth. This sound is caused by mechanical operation of the auto light switch, and does not indicate a problem with the watch.
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 Timekeeping mode (except when a setting screen is on the display), hold down B for about three seconds to toggle the auto light switch on and off.
•Turning on the auto light switch will cause the watch to beep. The “ON” indicator will appear and the light will turn on for 1.5 seconds.
•Turning off the auto light switch will cause the watch to beep. The “OFF” indicator will appear for 1.5 seconds. The light will not turn on.
•In order to protect against running down the battery, the auto light switch automatically turns off approximately six hours after you turn it on.
Tachymeter
Tachymeter bezel
|
| 60 TAC |
70 | 70 | HY |
6 | ||
|
| ME |
|
| T |
|
| E |
|
| R |
|
| 3 |
|
| 0 |
80 |
|
|
|
| 200 |
| 100 | 1 |
|
| 0 |
|
| 5 |
|
| 120 |
If your watch has a tachymeter bezel, you can perform the steps below to calculate average speed after using the Stopwatch Mode to measure the amount of time that it takes to travel one kilometer (or one mile).
•Never try to perform stopwatch operations while you are driving an automobile, riding a bicycle, or operating any type of vehicle. Doing so is very
dangerous and can result in accident.
1In the Stopwatch Mode, start an elapsed time
operation at any point you like.
2Stop the elapsed time operation after you travel one kilometer or one mile.
3Your average speed will be the value that the second hand is pointing to on the tachymeter bezel.
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.
Auto Return Features
•If you leave the watch in the Alarm, or Hand Setting Mode for two or three minutes without performing any operation, it returns to the Timekeeping Mode automatically.
•If you do not perform any operation for about two or three minutes while a setting mode is selected, the watch will exit the setting mode automatically.
Scrolling
•Bis used to change the hand setting in various setting modes. In most cases, holding down this button will start
•
-One complete cycle for the hands is one revolution (360 degrees) or 24 hours.
Radio-controlled Atomic Timekeeping Precautions
•Strong electrostatic charge can result in the wrong time being set.
•The time calibration signal bounces off the ionosphere. Because of this, such factors as changes in the reflectivity of the ionosphere, as well as movement of the ionosphere to higher altitudes due to seasonal atmospheric changes or the time of day may change the reception range of the signal and make reception temporarily impossible.
•Even if the time calibration signal is received properly, certain conditions can cause the time setting to be off by up to one second.
•The current time setting in accordance with the time calibration signal takes priority over any time settings you make manually.
•The watch is designed to update the date and day of the week automatically for the period January 1, 2001 to December 31, 2099. Setting of the date by the time calibration signal cannot be performed starting from January 1, 2100.
•This watch can receive signals that differentiate between leap years and
•Though this watch is designed to receive both time data (hour, minutes, seconds) and date data (year, month, day), certain signal conditions can limit reception to time data only.
•If you are in an area where proper time calibration signal reception is impossible, the watch keeps time within ±20 seconds a month at normal temperature.
•If you have problems with proper time calibration signal reception or if the time setting is wrong after signal reception, check your current time zone, and DST (summer time).
Timekeeping
•The year can be set in the range of 2001 to 2099.
•The watch’s
•The date will change automatically when the current time reaches midnight. The date change at the end of the month may take more time than normal.
•The current time for all time zones in the Timekeeping Mode and Dual Time Mode is calculated in accordance with the Greenwich Mean Time (GMT) differential of each zone, based on your Home Time Zone time setting.
•GMT differential is calculated by this watch based on Universal Time Coordinated (UTC*) data.
*UTC is the
•The illustration shows an example where it took 50 seconds to travel one kilometer by car. The second hand is pointing at 70, which indicates that the average speed is 70 kilometers per hour.
•See “Stopwatch” for details about using the stopwatch.
•The tachymeter can be used only when you are traveling by car or some other means that can cover one kilometer or one mile within 60 seconds.
Time Zone Table
GMT Differential Value | Major Cities in Time Zone | ||
Standard Time | DST/Summer Time |
| |
DST | Pago Pago | ||
DST | Honolulu, Papeete | ||
DST | Anchorage, Nome | ||
DST | Los Angeles, San Francisco, Las Vegas, Vancouver, | ||
|
|
| Seattle/Tacoma, Dawson City, Tijuana |
DST | Denver, El Paso, Edmonton, Culiacan | ||
DST | Chicago, Houston, Dallas/Fort Worth, New Orleans, | ||
|
|
| Mexico City, Winnipeg |
DST | New York, Montreal, Detroit, Miami, Boston, | ||
|
|
| Panama City, Havana, Lima, Bogota |
DST | Caracas, La Paz, Santiago, Port of Spain | ||
DST | Rio De Janeiro, Sao Paulo, Buenos Aires, Brasilia, | ||
|
|
| Montevideo |
DST |
| ||
DST | +0.0 | Praia | |
G 0.0 | G 0.0 | (GMT) | |
+0.0 | DST | +1.0 | London, Dublin, Lisbon, Casablanca, Dakar, Abidjan |
+1.0 | DST | +2.0 | Paris, Milan, Rome, Madrid, Amsterdam, Algiers, |
|
|
| Hamburg, Frankfurt, Vienna, Stockholm, Berlin |
+2.0 | DST | +3.0 | Cairo, Jerusalem, Athens, Helsinki, Istanbul, Beirut, |
|
|
| Damascus, Cape Town |
+3.0 | DST | +4.0 | Jeddah, Kuwait, Riyadh, Aden, Addis Ababa, Nairobi, |
|
|
| Moscow |
+3.5 | DST | +4.5 | Tehran, Shiraz |
+4.0 | DST | +5.0 | Dubai, Abu Dhabi, Muscat |
+4.5 | DST | +5.5 | Kabul |
+5.0 | DST | +6.0 | Karachi, Male |
+5.5 | DST | +6.5 | Delhi, Mumbai, Kolkata |
+6.0 | DST | +7.0 | Dhaka, Colombo |
+6.5 | DST | +7.5 | Yangon |
+7.0 | DST | +8.0 | Bangkok, Jakarta, Phnom Penh, Hanoi, Vientiane |
+8.0 | DST | +9.0 | Hong Kong, Singapore, Kuala Lumpur, Beijing, Taipei, |
|
|
| Manila, Perth, Ulaanbaatar |
+9.0 | DST +10.0 | Tokyo, Seoul, Pyongyang | |
+9.5 | DST | +10.5 | Adelaide, Darwin |
+10.0 | DST +11.0 | Sydney, Melbourne, Guam, Rabaul | |
+11.0 | DST +12.0 | Noumea, Port Vila | |
+12.0 | DST | +13.0 | Wellington, Christchurch, Nadi, Nauru Island |
•Based on data as of December 2005.
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