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USER’S GUIDE 2594
5
Charging Precautions
Certain charging conditions can cause the watch to become very hot.
Avoid leaving the watch in the areas described below whenever charging
its rechargeable battery.
Warning!
Leaving the watch in bright light to charge its rechargeable battery
can cause it to become quite hot. Take care when handling the
watch to avoid burn injury. The watch can become particularly hot
when exposed to the following conditions for long periods.
• On the dashboard of a car parked in direct sunlight
• Too close to an incandescent lamp
• Under direct sunlight
Charging Guide
After a full charge, timekeeping remains enabled for up to about six
months, while the watch is used under the conditions described below.
Operating Conditions
•
Watch is not exposed to light
•
1 backlight operation (2 seconds) per day
•
20 seconds of alarm operation per day
Charge Times
Exposing the watch to light for the periods shown below each day
restores the power used by the above operating conditions.
• Stable operation is promoted by frequent charging.
Recovery Times
The table below shows the amount exposure that is required to take the
battery from one level to the next.
Exposure Level (Brightness) Approximate
Exposure Time
Outdoor Sunlight (50,000 lux) 5 minutes
Sunlight Through a Window (10,000 lux) 25 minutes
Daylight Through a Window on a Cloudy Day 50 minutes
(5,000 lux)
Indoor Fluorescent Lighting (500 lux) 8 hours
Exposure Level
(Brightness)
▲
▲
▲
108 hours
3
hours
Approximate Exposure Time
Level 5 Level 4 Level 3 Level 2 Level 1
• The above exposure time values are all for reference only. Actual
required exposure times depend on lighting conditions.
Outdoor Sunlight
(50,000 lux)
Sunlight Through a Window
(10,000 lux)
21 hours
13
hours
Daylight Through a Window
on a Cloudy Day (5,000 lux)
– – –
25
hours
3
hours
14
hours
28
hours
18
hours
94
hours
188
hours
To enter the Power Saving Mode
In any mode (except while figures are flashing
on the display for input), hold down C for
about two seconds.
• This enters the Power Saving Mode, which
causes all figures (except Power Saving
indicator) to disappear from the display.
Timekeeping and other functions continue to
be performed internally, however.
• Alarms, the Hourly Time Signal, and the
backlight are disabled while the watch is in
the Power Saving Mode.
• Pressing any button (except A) exits the
Power Saving Mode and enters the
Timekeeping Mode.
D
A
B
C
Power saving indicator
Power Saving Mode
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 Display
Auto Display is a demonstration feature that continually changes the
contents of the digital display. Note that you cannot use any of the
watch’s other functions while Auto Display is operating.
To turn off Auto Display
Hold down A for about two seconds until the watch beeps.
To turn on Auto Display
1. In any mode (except while figures are flashing on the display for input),
hold down C for about two seconds to enter the Power Saving Mode.
2. Hold down A for about two seconds until the watch beeps. This
indicates that Auto Display is on.
• Leaving the watch in a dark area can cause Auto Display operation
to stop. Normal operation should resume when the watch is again
exposed to light.
• Auto Display cannot be turned on while the rechargeable battery is
at Level 4 or Level 5. Auto Display also turns off automatically
whenever the rechargeable battery drops to Level 4 or Level 5.
Auto Return Features
If you leave a screen with flashing digits or a cursor on the display for
two or three minutes without performing any operation, the watch
automatically saves anything you have input up to that point and exits
the setting screen.
Data and Setting Scrolling
The B and 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.
Initial Screens
When you enter the Data Bank or World Time Mode, the data you were
viewing when you last exited the mode appears first.
Timekeeping
• 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 when battery
power drops to Level 5.
12-hour/24-hour Timekeeping Formats
The 12-hour/24-hour timekeeping format you select in the Timekeeping
Mode is also applied in all modes.
• With the 12-hour format, the P (PM) indicator appears to the left of the
hour digits for times in the range of noon to 11:59 p.m. and the A (AM)
indicator appears to the left of the hour digits for times in the range of
midnight to 11:59 a.m.
• With the 24-hour format, times are displayed in the range of 0:00 to
23:59, with 24 indicator.
World Time
• GMT differential is calculated by this watch based on Universal Time
Coordinated (UTC) data.
• The seconds count of the World Time is synchronized with the
seconds count of the Timekeeping Mode.
Backlight Precautions
• The electro-luminescent panel that provides illumination loses power
after very long use.
• The illumination provided by the backlight may be hard to see when
viewed under direct sunlight.
• The watch may emit an audible sound whenever the display is
illuminated. This is due to vibration of the EL panel used for
illumination, and does not indicate malfunction.
• The backlight automatically turns off whenever an alarm sounds.
• The backlight remains lit for about two seconds from the point you
press the button, even if it is already lit when you press the button. If
you keep the button depressed for two seconds or more, the backlight
automatically turns off.
Auto light switch precautions
• Wearing the watch on the inside of your wrist and movement or
vibration of your arm can cause the auto light switch to activate and
illuminate the display. To avoid running down the battery, turn off the
auto light switch whenever engaging in activities that might cause
frequent illumination of the display.
• The backlight may not light if the face of the
watch is more than 15 degrees above or
below parallel. Make sure that the back of
your hand is parallel to the ground.
• The backlight turns off in about two
seconds, even if you keep the watch pointed
towards your face.
More than 15 degrees
too high