Mark Descriptions; How To Charge The Watch; How To Charge; Guidelines Of Charging Duration - Seiko T-4 Instructions Manual

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Mark Descriptions

Battery mark ：Indicates remaining amount of power reserve graphically.
Power Save mark ：Indicates that Power Save function is in operation.
Sleep mark ：Indicates that Sleep function is in operation.
Stopwatch mark ： Flashes when stopwatch is measuring, and lights up when it is stopped.
Timer mark ： Flashes when timer is counting, and lights up when it is stopped.
World time mark ： Indicates that the time attached with it is world time.
DST mark ：Shown in Time/Calendar mode when DST is set.
Alarm mark ：Shown when alarm is engaged.
Hourly time signal mark ：Shown when hourly time signal/button operation confirmation
sound is turned on. When it is shown, hourly time signal rings
every hour on the hour.
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(2) Guidelines of charging duration

Charge the watch properly by referring to the table below.
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Battery mark
Display
Environment/
is all blank
Generation level
Environment 1
Outdoor on a sunny day Approximately 1 hour
Generation level: 10
Environment 2
By a window on a sunny day Approximately 10 hours
Generation level: 6
Environment 3
By a window on a cloudy day Approximately 20 hours
Generation level: 4
Environment 4
Indoor under fluorescent light Approximately 200 hours
Generation level: 2
※"Generation level" is a guideline of the level of solar generation that the Solar Monitor mode of the
watch displays in 10 levels in each environment above. For more details, see "How to Use Solar
Monitor Mode" on P. 107.
Once fully charged, the watch keeps operating for approximately 5 months without being
exposed to light. If any one of the following functions is used more often or longer than
specified below, the watch may run down in less than 5 months.
・Alarm sound: 10 seconds/day ・Backlight: Once/day for 2 seconds
・Power save: 6 hours/day
※Note that frequent use of the backlight will cause the power reserve to decrease faster.
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For one day s
operation
Approx. Approx. Approx. Approx.
2 hours 2 hours 1 hour 2 minutes
Approx. Approx. Approx. Approx.
16 hours 24 hours 11 hours 22 minutes
Approx. Approx. Approx. Approx.
33 hours 48 hours 22 hours 44 minutes
Approx.
8 hours

How to Charge the Watch

(1) How to charge

Expose the solar panel to light.
Solar panel
To enjoy the optimum performance of
the watch, make sure that the watch is
sufficiently charged at all times.
※When charging the watch, take care not to expose the watch to extremely high temperatures. The
operational temperature range of the watch is between -10℃ and +60℃.
※When using the watch for the first time after purchase or after it has stopped completely due to
energy depletion, charge the watch for sufficient duration by referring to the table on the next page.

(3) Display and amount of power reserve

■ Power reserve

The battery mark on the display shows the remaining amount of battery power.
Battery mark/
level of power reserve
Sufficient
❶
Medium
❷
Low
❸
Under the following conditions, the watch is not
charged sufficiently and the battery energy is likely
to be depleted, resulting in stoppage of the watch.
・The watch is concealed under the sleeve.
・The watch is used or stored under an environment
where it is hardly exposed to light.
Limitations on
Charging
use of functions
None Charging is not necessary.
Charging is recommended.
None
→See "How to charge" on P. 75.
Power reserve is depleting.
None
Charge the watch immediately.
→See "How to charge" on P. 75.
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