Operation Guide 2607 2637 2687
4
T
In any mode, hold down L for about tw
(auto light switch on indicator
display
• The auto light switch on indicator is on the display in all modes while the auto light
switch is turned on.
Battery
This watch is equipped with a solar cell and a rechargeab
battery) that is charged by the electrical power produced by the solar cell.
illustration shown below sho
Example: Orient the watch so its face
is pointing at a light source.
• Note that charging efficiency drops
when any part of the solar cell is
block
•
a watch with a resin band.
Important!
• Stor
such a wa
power to run down.
whenever possib
Solar cell
• This watch employs a solar cell that converts light into electricity that charges a built-
in rechargeable battery
replacement, but after v
battery may lose its ability to achieve a full charge
getting the rechargeable battery to a full charge, contact your dealer or CASIO
distributor about having the rechargeab
• The rechargeable batter
battery only
• All data stored in memor
return to their initial factory defaults whenev
when you hav
• T’s P
to bright light when storing it for long periods.
battery from going dead.
Battery Po
The battery power indicator on the display sho
rechargeable battery’ s po
Battery power
indicator
Recover
indicator
Level
1
2
3
4
Battery Po
Charge Soon Alert
Function Status
All functions enabled.
All functions enabled.
Beeper tone, backlight,
calibration signal
reception, display
buttons are disabled.
All functions, including
timekeeping, are
disabled.
Module 2607 2637 2687
• The Level 3 charge warning indicator tells you that battery power is v
that exposure to bright light f
• At Level 4, all functions are disabled and settings return to their initial factory
defaults.
charged, but you need to set the time and date after the battery reaches Le
from Lev
battery reaches Level 2 after dropping to Le
• Leaving the watch in direct sunlight or some other very strong light source can
cause the battery power indicator to temporarily show a reading that is actually
higher than the battery level.
a fe
• If you use the backlight or the alarms a number of times during a shor
recover indicator (R
/RECO ) appears on the display and the f
operations become disabled until battery power reco
Backlight
Beeper tone
Calibration reception
After some time, battery power will recov ( R /
RECO
) will disappear, indicating that the abo
Charging Precautions
Cer
the watch in the areas described below whene
Also note that allowing the watch to become v
display to b
the watch returns to a lower temper
W
Leaving the watch in bright light to c
to become quite hot.
The watch can become particularly hot when exposed to the f
conditions for long periods.
• On the dashboard of a car par
• T
• Under direct sunlight
Charging Guide
After a full charge, timekeeping remains enabled f
watch is used under the conditions described below
Operating Conditions
•
W
•
Display on 18 hours per da
•
1 backlight operation (1.5 seconds) per da
•
10 seconds of alarm operation per day
•
4 times calibration reception per da
Charge Times
Exposing the watch to light for the periods sho
used by the abov
• Stable operation is promoted by frequent charging.
Recovery Times
The table below sho
one lev
Exposure Level (Brightness) Appro
Exposure Time
Outdoor Sunlight (50,000 lux) 5 minutes
Sunlight 24 minutes
Daylight 48 minutes
Indoor Fluorescent Lighting (500 lux) 8 hours
Exposure Level
(Brightness)
Outdoor Sunlight
(50,000 lux)
Sunlight Through
Window (10,000 lux)
Daylight Through a
Window on a Cloudy
Day (5,000 lux)
Indoor Fluorescent
Lighting (500 lux)
Appro
Lev Lev Lev Lev
1 hour 14 hours 3 hours
3 hours 70 hours 14 hours
5 hours 143 hours 28 hours
57 hours ------------ ------------
▲
▲
▲
• The above exposure time values are all f
times depend on lighting conditions.
Reference
This section contains more detailed and technical information about watch oper
It also contains important precautions and notes about the various features and
functions of this watch.
A
• If you leave the watch in the
minutes without performing any oper
Timekeeping Mode.
• If you leave a screen with flashing digits on the displa
without performing any operation, the w
input up to that point and exits the setting screen.
Data and Setting Scrolling
The B and D buttons are used in v
through data on the display
operation scrolls through the data at high speed.
Initial Screens
When you enter the Alarm or W
last exited the mode appears first.
Time Calibration Signal Reception Precautions
• Reception is best when the antenna built into the 12 o'clock edge of the watch is
facing in the gener
the watch while the time calibration signal receiv
stable reception impossible
• Proper signal reception can be difficult or even impossible under the conditions listed
below
• Radio interference can make signal reception impossible.
• Strong electrostatic charge can result in the wrong time being set.
• Even when the watch is within the reception range of the transmitter
reception is impossible if the signal is bloc
formations between the watch and signal source.
Inside or
among
buildings
Inside a
vehicle
Near
household
appliances or
office
equipment
Near a
construction
site, airpor
other sources
of electrical
noise
Near high-
tension
power lines
Among or
behind
mountains
• Signal reception is affected by weather
changes.
• The time calibration signal is bounced off the ionosphere.
factors as changes in the reflectivity of the ionosphere, as w
ionosphere to higher altitudes due to seasonal atmospheric changes or the time of
day ma
impossible.
• The watch is designed to automatically update the date and day of the week for the
period January 1, 2000 to December 31, 2099. Setting of the date b
calibration signal cannot be performed starting from January 1, 2100.
• This watch can receive signals that differentiate between leap y
years.
• If you are in an area where proper time calibration signal reception is impossible, the
watch keeps time within ±15 seconds a month at normal temperature.
