Manual Casio 5445 - GST-S100 (page 2 of 8) (English)

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Operation Guide 5445

E-19

x For details about the operating time and daily operating conditions, see the “Power

Supply” (page E-70) section of the Speciﬁ cations.

Power Saving

When turned on, Power Saving enters a sleep state automatically whenever the

watch is left for a certain period in an area where it is dark. The table below shows

how watch functions are affected by Power Saving.

x For information about enabling and disabling power saving, see “To turn Power

Saving on and off” (page E-65).

x There actually are two sleep state levels: “display sleep” and “function sleep”.

Elapsed Time in Dark Digital Dials Operation

60 to 70 minutes (display sleep) Blank

Digital dials are off, but all functions

are enabled.

6 or 7 days (function sleep) Blank

Hour and minute hands stop at

12o’clock. All functions are disabled,

but timekeeping is maintained.

E-18

Charging Times

Exposure Level

(Brightness)

Daily

Operation

Level Change *2

Level 5 Level 4 Level 3 Level 2 Level 1

Outdoor sunlight

(50,000 lux)

8 min. 3 hours 27 hours 8 hours

Window sunlight

(10,000 lux)

30 min. 8 hours

102 hours

28 hours

Window sunlight on

cloudy day (5,000 lux)

48 min. 13 hours

165 hours

44 hours

Indoor ﬂ uorescent

lighting (500 lux)

8 hours 181 hours – – – – – –

* 1 Approximate exposure each day to generate power for normal daily operation.

* 2 Approximate exposure time (in hours) required to take power up one level.

x The above exposure times all are for reference only. Actual exposure times depend

on lighting conditions.

E-17

Power Recovery Mode

x Performing multiple illumination, beeper, and/or high-speed hand movement

operation during a short period may cause all of the battery power indicators (H,

M, and L) to start ﬂ ashing in the lower digital dial. This indicates that the watch is in

the power recovery mode. Illumination, alarm, countdown timer alarm, and hourly

time signal operations will be disabled until battery power recovers.

x Battery power will recover in about 15 minutes. At this time, the battery power

indicators (H, M, L) will stop ﬂ ashing. This indicates that the functions listed above

are enabled again.

x If all of the battery power indicators (H, M, L) are ﬂ ashing and the CHG (charge)

message also is ﬂ ashing, it means the battery level is very low. Expose the watch

to bright light as soon as possible.

x Frequent ﬂ ashing of all of the battery power indicators (H, M, L) probably means

that remaining battery power is low. Leave the watch in bright light to allow it to

charge.

E-16

x At Level 5, all functions are disabled and settings return to their initial factory

defaults. Once the battery reaches Level 2 (M) after falling to Level 5, reconﬁ gure

the current time, date, and other settings.

x Display indicators reappear as soon as the battery is charged from Level 5 to

Level 2 (M).

x Leaving the watch exposed to direct sunlight or some other very strong light

source can cause the battery power indicator to show a reading temporarily that

is higher than the actual battery level. The correct battery level should be indicated

after a few minutes.

x The current time and all other settings return to their initial factory defaults

whenever battery power drops to Level 5 and when you have the battery replaced.

E-15

Level

Battery Power Indicator

Function Status

(H)

All functions enabled.

(M)

All functions enabled.

(L and

LOW)

Illumination and beeper disabled.

Except for Timekeeping Mode, all other modes

disabled.

(CHG)

All functions and display indicators disabled except

for timekeeping and display of CHG (charge) in the

lower digital dial.

Hour and minute hands stopped at 12 o’clock.

5 All functions disabled.

x The ﬂ ashing LOW message at Level 3 (L) tells you that battery power is very low,

and that exposure to bright light for charging is required as soon as possible.

E-14

Power Levels

You can get an idea of the watch’s power level by observing the battery power

indicator in the lower digital dial.

Battery power indicator

E-13

Important!

x Allowing the watch to become very hot can cause the digital displays to black out.

The appearance of the LCD should become normal again when the watch returns

to a lower temperature.

x Turn on the watch’s Power Saving function (page E-19) and keep it in an area normally

exposed to bright light when storing it for long periods. This helps to ensure that

power does not run down.

x Storing the watch for long periods in an area where there is no light or wearing it in

such a way that it is blocked from exposure to light can cause power to run down.

Expose the watch to bright light whenever possible.

E-12

Warning!

Leaving the watch in bright light for charging can cause it to become quite

hot. Take care when handling the watch to avoid burn injury. The watch can

become particularly hot when exposed to the following conditions for long

periods.

x On the dashboard of a car parked in direct sunlight

x Too close to an incandescent lamp

x Under direct sunlight

E-11

Charging the Watch

The face of the watch is a solar panel that generates power from light. The

generated power charges a built-in rechargeable battery, which powers watch

operations. The watch charges whenever it is exposed to light.

Charging Guide

Whenever you are not

wearing the watch, leave

it in a location where it is

exposed to light.

x Best charging

performance is achieved

by exposing the watch

to the strongest light

available.

When wearing the watch,

make sure that its face is

not blocked from light by

the sleeve of your clothing.

x The watch may enter a

sleep state (page E-19) if its

face is blocked by your

sleeve even only partially.

E-10

Other Settings .................................................................................................. E-63

To turn the button operation tone on and off ................................................ E-63

To turn Power Saving on and off .................................................................. E-65

Troubleshooting ............................................................................................... E-67

Speciﬁ cations ................................................................................................... E-69

I cant get the hands to agree with the digital reading. Yes I have the correct city
When I adjust the hands manually they randomly move back when I try to set them Submitted on 5-4-2023 at 01:35
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Casio 5445 - GST-S100 Manual

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