Operation Manual

■ CHARACTERISTICS
1. Powered by light energy: The solar
cell installed converts light energy into
electrical energy, and stores it in the
rechargeable battery.
2. No need for battery replacement:
The watch is provided with a rechargeable
solar cell instead of the conventional
silver oxide battery.
3. Large volume rechargeable battery:
When the watch is fully charged, it will
keep operating for approximately 50 days.
4. Energy depletion forewarning function:
When the energy stored in the rechargeable
battery is reduced to an extremely small
amount, the second hand starts moving
at 2-second intervals.
5. Quick-start function: Even when
the watch completely stops operating,
it will start operating immediately once
exposed to light.
INSTRUCTION MANUAL
CAL. V851 (RZS SERIES)
06-96
NREV851
until the second hand moves at 1-second
intervals.
3. Charge the rechargeable battery sufficiently,
and then set the time and put on the
watch.
* See “■ GUIDELINE OF CHARGING TIME”
below.
Second
hand
Minute hand
Normal
position
Crown
First
click
Hour hand
■ DISPLAY AND CROWN OPERATION
Crown : Setting the time at the first click.
■ HOW TO CHARGE AND START
THE WATCH
Before using the watch, be sure to charge
the rechargeable battery sufficiently by exposing
the watch to light.
1. Expose the watch to sunlight or strong
artificial light of more than 1,000 lux
(for example, two 15-watt fluorescent
lights with a distance of 70 cm between
the watch and the light source).
It will start operating immediately with
the second hand moving at 2-second intervals.
* While the second hand is moving at 2-
second intervals, the energy stored in
the rechargeable battery is not sufficient.
If the watch is turned away from the
light, the watch will stop operating.
2. Keep the watch exposed to the light
Caution:
While charging the watch, make sure that the
watch temperature does not exceed 50° C.
• When the watch is fully charged, it
will keep operating for approximately
50 days.
• We recommend that the watch be recharged
daily for about 3 hours.
Crown
First
click
■ HOW TO SET THE TIME
1. Pull out the crown to the first click when
the second hand is at the 12 o’clock position.
The second hand will stop on the spot.
2. Turn the crown clockwise or counter-
clockwise to set the hour and minute hands
to the desired time.
* When setting the minute hand, first advance
it 4 to 5 minutes ahead of the desired
time and then turn it back to the exact
minute.
3. Push the crown back in to the normal position
in accordance with a time signal.
■ GUIDELINE OF CHARGING TIME
The charging time required varies depending
on the intensity of light.
Illumina-
tion
(lux)
60-watt incandes-
cent light
Distance of
60 cm (2 ft.)
500
Light source Environment
8 hours 4 hours220 hours
Office,
overhead
Fluorescent light
Time required (approx.)
CBA
700 6 hours 2.5 hours160 hours
2 hours120 hours
Distance of
70 cm (2 ft.
4 in.)
1,000 4 hours
15-watt fluores-
cent light x 2
Distance of
12 cm (4 in.)
15-watt fluores-
cent light x 2
40 minutes 30 hours 20 minutes
Distance of
3 cm (1 in.)
10,000 Fluorescent light 20 minutes 16 hours 10 minutes
Cloudy,
outdoors
10,000 Sun 20 minutes 16 hours 10 minutes
Sunny, direct
sunlight
100,000 Sun 2 minutes 12 hours 2 minutes
5,000
A : for normal movement of second hand
B : for full charge
C : to maintain 1-day usage