— 3 —
The power supply of this watch uses a solar cell to generate
electrical power
, which is stored by a rechargeable battery
. Using
or storing the watch where it is not regularly exposed to light, or
allowing it to be blocked from light by your sleeve for long periods
as you are wearing it can cause the power of the rechargeable
battery to run down.
T
o
ensure stable operation, be sure to allow
the watch to be exposed to light as much as possible when you
are wearing or storing it.
Important!
Note that all data in memory and all settings are cleared whenever
you allow the level of the rechargeable battery to drop to Level 4.
■
Flashing Recover Indicator
If you use the light or alarm a number of times during a short
period, a recover (RECOV) indicator flashes on the display and
the following operations become disabled as battery power
recovers.
•
Display illumination,
•
Alarm and hourly time signal
•
T
ime calibration signal reception
Normal operation will return after the
battery recovers.
Recover
Indicator
■
Charging Precautions
A
void charging the watch in the following locations, and anywhere
else where the watch may become very hot.
•
On the dashboard of an automobile parked in the sun
•
V
e
ry close to an incandescent light source or other sources of
heat
•
In a location exposed to direct sunlight for long periods
Note that the display panel may become black under very high
temperatures.
This is temporary
, and the display will appear
normal again at lower temperatures.
Depending on the light source you are using, the
case of the watch may become quite hot during
charging.
T
a
ke care to guard against burn injury after
charging.
■
T
o
charge the battery
Point the solar panel (display) of the watch at a light source.
•
Remember that even a partial blockage of the solar cell reduces
charging ef
ficiency
.
Example: Positioning the watch
Solar Cell
•
The illustration shows the resin band model.
Power Supply
Display Illumination
An EL (electroluminescent) panel is used to illuminate the display
of the watch for easy reading in the dark.
An auto light switch
automatically illuminates the display when you angle the watch
towards your eyes for reading.
■
T
o
illuminate the display manually
Press the
LLLLL
button in any
mode to illuminate the display
of the watch.
•
Y
ou can use the procedure under
“T
o
specify the illumination
duration
” to select either
1.5 seconds or 2.5 seconds for
the illumination duration.
•
Pressing the
L
button illuminates the display regardless of
whether the auto light switch is on or of
f.
Y
o
u may hear a faint rattling sound when you move the watch
around.
This sound is caused by the movement of a metal
bulb that controls operation of the auto light switch, and does
not indicate malfunction.
■
T
o
illuminate the display with the auto
light switch
The auto light switch automatically illuminates the display
whenever you angle the watch towards your eyes for reading,
but only when it is dark.
•
The auto light switch does not illuminate the display when
surrounding light is bright.
Y
ou can use the procedure under
“T
o
specify the illumination
duration
” to configure the illumination duration as approxi-
mately 1.5 seconds or 2.5 seconds.
■
T
o
turn the auto light switch on and off
While a setting screen (one on which a setting is flashing) is on the
display
, hold down the
L
button for about two seconds to toggle
the auto light switch on (auto light switch on indicator displayed)
and of
f (no indicator displayed).
Auto Light
Switch On
Indicator
■
Positioning Y
our
Arm
Correctly
•
Y
ou should be wearing the watch
on the outside of your wrist
when using the auto light switch.
•
Make sure that the left (9 o
’clock) and
right (3 o
’clock) sides of the watch are
within
±
15 degrees of being parallel
with the ground.
The auto light switch
may not operate properly if the angle is
greater
.
Important!
•
The light may be dif
ficult to see if you turn it on under bright
sunlight.
•
If you press any button or if an alarm operation starts while the
display is illuminated, illumination will turn off.
•
Display illumination does not work while you are performing a time
calibration signal manual receive operation
.
•
Y
ou may hear humming sound from the watch while the display is
illuminated.
This is caused by vibration of the EL
panel used of
illumination, and does not indicate malfunction
.
Auto Light Precautio
ns
•
Frequent use of the auto light can run down the battery
.
•
The auto light switch may cause the display to illuminate when
your sleeve covers the display of the watch
.
•
The display may not illuminate immediately when you angle the
watch towards your face.
This does not indicate malfunction
.
•
The display remains illuminated for the currently set duration (1.5
or 2.5 seconds) only
, even if you leave the watch angled towards
your face
.
•
The auto light switch is automatically disabled whenever battery
power is at Level 3 or lower.
•
The display may illuminate unintentionally when you wear the
watch on the inside of your wrist, when you shake your arm, or
when you raise your ar
m. Be sure to turn off the auto light
switch whenever you do not need display illumination
.
•
Keep the auto light switch turned of
f whenever you are wearing
the watch on the inside of your wrist
.
•
Electro-static charge and magnetism can interfere with auto light
operation and even make operation impossible. If this happens
lower your arm to the starting position and then raise it again. If
you still have trouble with illumination, try lowering your arm down
to your side and then raise it to your face for reading.
Battery Level Indicator
Normal operation enabled.
Normal operation enabled.
Level 1
Black-On-
White
White-On-
Black
Level 2
Level 3
Level 4
Digital display
, illumination, alarms,
tones (alarms, hourly time signal),
and signal reception disabled.
All functions, including timekeeping,
disabled.
•
Exposing the watch to direct sunlight or other strong light may cause
the battery level indicator to indicate a level momentarily that is higher
than the actual battery level. Because of this, you should wait for a
short while after charging to check the battery level indicator
.
•
Even after the battery drops to Level 4, you will be able to resume
normal operation by charging the battery
.
•
When charging from Level 4, the display will start operating when
the battery reaches Level 3.
At this time you will be able to
configure time and date settings, but you should keep the watch
exposed to light until the battery reaches Level 2 or Level 1.
■
Start charging at Level 3!
Battery Level 3 indicates that remaining battery power is very low
.
Be sure to expose the watch to light for recharging as soon as
possible after the Level 3 indicator starts to flash.
■
Charging Guide
Starting from a full charge, the watch
should be able to continue operating
for about eight months without
further charging under the conditions
described below
.
Daily Use (All time values are
approximate.)
•
Display Illumination: 1.5 seconds
•
Alarm: 10 seconds
•
Signal reception: 16 minutes
•
Display On: 18 hours
Making sure the watch is regularly
exposed to light ensures stable
operation.
•
Charge
T
imes Required to
Advance to a Higher Level
Approximate Exposure T
ime
Level 4
Level 3
Level 2
Level 1
–
–
––
–
–
2 hours
6 hours
22 hours
5 hours
9 hours
101 hours
30 hours
109 hours
61 hours
222 hours
Exposure Level
(Brightness)
Outdoor Sunlight
(50,000 lux)
Daylight
Through a Window on
an Overcast Day (5,000 lux)
Indoor Fluorescent
Lighting (500 lux)
Sunlight Through
a
Window (10,000 lux)
•
Note that the above charging times are for reference only
.
Actual
charging time depends on a variety of environmental factors.
Rotate your arm so the watch
is angled at about 40 degrees,
so you can read its display
.
With the watch on
your wrist, position it
level with the ground.
11111
22222
At least
40
degrees
Required Daily Charging T
ime
•
The following is the daily
amount of charging required
each day to support the
operations under
“Daily Use
”.
Exposure Level
(Brightness)
Outdoor Sunlight
(50,000 lux)
5 minutes
24 minutes
48 minutes
8 hours
Sunlight Through
a Window
(10,000 lux)
Daylight Through
a
Window on an Overcast
Day (5,000 lux)
Indoor
Fluorescent
Lighting (500 lux)
Approximate
Exposure
Time
