About energy
■ Energy depletion forewarning function (Two-second
interval movement and Five-second interval movement)
The energy depletion forewarning function is activated when the energy stored in the watch runs low.
In such a case, the seconds hand moves at two-second intervals.
If the watch continues to be in the state of two-second interval movement, the watch switches to five-second
interval movement, followed by a completely stopped state.
If the energy depletion forewarning function is activated, charge the watch sufficiently.
“How to charge the battery” → P.38
“Guide to charging times” → P.39
* Neither the button nor the crown can be operated while the seconds hand moves at two-second or five-second
intervals. (This is not a malfunction.)
* While the seconds hand moves at five-second intervals, the hour hand and date stop operating.
* While the seconds hand moves at two-second and five-second intervals, the watch is unable to receive radio
signals automatically. After the watch is charged sufficiently and the seconds hand returns to normal one-second
interval movement, conduct the manual reception of radio signals to set the watch to the correct time. (“Automatic
reception and manual reception” → P.21)
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5
SOLAR CHARGING FUNCTION
■ Power save function
This watch is equipped with a power save function which can suppress energy consumption when it is left without receiving
an adequate light source for a certain length of time.
* There are two types of power save mode.
Power Save 1 Power Save 2
Condition
The watch is exposed to a state without receiving an
adequate light source for 72 hours or longer.
The watch is in an insufficient charging state for a long
time.
Situation
The seconds hand
stops pointing at the
15-second position,
and the hour and
minute hands, and
date also stop.
The watch conducts
automatic radio signal
receiving.
The seconds hand
stops pointing at the
45-second position,
and the hour and
minute hands, and
date also stop.
The watch does not
conduct automatic
radio signal receiving.
How to
handle the
situation
When the watch is exposed to an adequate light source
for five seconds or longer, it displays the current time
again after the seconds hand is rapidly advanced.
After sufficiently charging the battery, set the watch for
the current time, if necessary.
Power Save 2
* While the watch is being charged, the seconds hand moves at “Five-second Intervals”. During the “Five-second Interval Movement”,
neither the button nor the crown can be operated.
* If the “Power Save 2” mode is prolonged, the stored power amount drops and the internal current time information stored will be lost.
When the watch returns to its normal movement of one-second interval after sufficiently charging the battery, set the current time by
receiving a radio signal. (“Automatic reception and manual reception” → P.21)
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Only the 1B22 and 1B32 are date-displaying models.
5
SOLAR CHARGING FUNCTION
Power Source
The battery used in this watch is a special secondary battery, which is different from ordinary
batteries.
Unlike an ordinary silver oxide battery, the secondary battery does not require periodic
replacement.
The capacity or charging efficiency may gradually lower due to long-term use or operating
environment.
In addition, long-term use may shorten the charge duration due to wear, contamination, lubricant
deterioration of mechanical parts, etc. Request repair when the performance lowers.
b
WARNING
■ Notes on replacing the secondary battery
• Do not remove the secondary battery from the watch.
Replacement of the secondary battery requires professional knowledge and skill.
Please ask the retailer from whom the watch was purchased for replacement of the
secondary battery.
• Installation of an ordinary silver oxide battery can generate heat that can cause
bursting and ignition.
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TO PRESERVE THE QUALITY OF YOUR
WATCH
* Overcharge prevention function
When the secondary battery is fully charged, the overcharge prevention function is automatically
activated to avoid further charging.
There is no need to worry about damage caused by overcharging no matter how much the
secondary battery is charged in excess of the “time required for fully charging the watch”.
* For the required time to fully charge the battery, see “Guide to charging times” → P.39.
b
WARNING
■ Notes on charging the watch
• When charging the watch, do not place the watch in close proximity to an intense light
source such as lighting equipment for photography, spotlights or incandescent lights,
as the watch may be excessively heated resulting in damage to its internal parts.
• When charging the watch by exposure to direct sunlight, avoid places that easily reach
high temperatures, such as a car dashboard.
• Always keep the watch temperature under 60°C.
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TO PRESERVE THE QUALITY OF YOUR
WATCH
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