Auto Time Adjustment by
Bluetooth Connection (Time
Adjustment)
Q1
When does the watch adjust its time?
The watch will connect with the phone and
perform auto time adjustment at around 12:30
a.m., 6:30 a.m., 12:30 p.m. and 6:30 p.m. The
connection is automatically terminated after
auto time adjustment is complete.
Q2
Auto time adjustment is performed,
but the time setting is not correct.
Is auto time adjustment not being
performed according to its normal
schedule?
Note that auto time adjustment is not
performed for 24 hours after swapping of
the Home Time and World Time, or after
the time setting is adjusted manually on
the watch. Auto time adjustment will
resume 24 hours after either of the above
operations is performed.
Is the watch in the Stopwatch Mode?
Time adjustment will not start if the watch
is in the Stopwatch Mode when a
scheduled adjustment time is reached.
Exit the Stopwatch Mode.
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Is auto time adjustment enabled?
Auto time adjustment will not be
performed at the scheduled times unless
it is enabled. Enable auto time
adjustment.
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Using the Watch in a Medical Facility or
Aircraft
Q3
Time is not displayed correctly.
If your phone is unable to receive a signal
because you are outside its service range or
for some other reason, the watch may not be
able to display the correct time. If this
happens, connect the phone to its network
and then adjust the time setting.
Alarm
Q1
The alarm does not sound.
Is the watch’s battery charged?
Keep the watch exposed to light until it
recharges sufficiently.
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The crown is pulled out.
The alarm will not sound while the crown
is pulled out to the second click. Push the
crown back in to its normal position.
Is the alarm enabled?
Enable the alarm.
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Hand Movement and
Indications
Q1
The second hand is jumping at two-
second intervals.
Battery power is low. Keep the watch exposed
to light until it recharges sufficiently.
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Q2
All hands are stopped and buttons do
not work.
The battery is dead. Keep the watch exposed
to light until it recharges sufficiently.
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Q3
The hands suddenly start moving at
high speed.
This is due to one of the reasons below, and
does not indicate malfunction. Simply wait
until normal hand movement resumes.
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The watch is recovering from a power
saving state.
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●
Watch is connected with a phone to adjust
its time setting.
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Q4
Hands are stopped and buttons do
not work.
The watch is in the charge recovery mode.
Wait until the recovery process is complete
(for about 15 minutes). The watch will recover
more quickly if you place it in a brightly lit
location.
Q5
The hand and/or day indicator are not
aligned correctly.
Strong magnetism or impact can cause the
hands and/or the indicator to go out of
alignment. Adjust hand and/or day indicator
alignment.
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Adjusting Hand and Day Indicator
Alignment
●
Check the information below to find out how
to align the hands and/or day indicator
manually.
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Adjusting Hand and Day Indicator
Alignment
Crown Operations
Q1
Nothing happens when I rotate the
crown.
If you do not perform any operation for about
two minutes after pulling out the crown
(approximately 30 minutes in the case of hand
and day indicator alignment), crown
operations will automatically become
disabled. Push the crown back in to its normal
position and then pull it out again to re-enable
crown operations.
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Other
Q1
I can’t find the information I need
here.
Visit the website below.
https://world.casio.com/support/
Watch Operation Guide 5666
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