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Using the Watch in a Medical Facility or Aircraft
Disable auto time adjustment whenever you are in a medical facility, and aircraft, in any other area
where radio wave reception and connection with a phone are prohibited or restricted.
Disabling auto time adjustment disables time calibration signal auto receive and auto connection with
a phone.
Before using the crown, be sure to first read the "Crown Operations and Configuring Settings" (page
E-14).
In the Calendar Mode, press D once and then pull out the crown to the first click. The second hand
will move to Y (YES) (auto receive enabled) or N (NO) (auto receive disabled). To disable auto time
adjustment, rotate the crown to move the second hand to N (NO). To enable auto time adjustment,
rotate the crown to move the second hand to Y (YES). After the setting is the way you want, push the
crown back in to its normal position.
E-8
Summer time: DST
Standard time: STD
Auto summer time: AT
E-10
Time Calibration Signal Auto Receive
●
Leave the watch in a location that is appropriate for time calibration signal reception between
the hours of midnight and 5:00 a.m. See "Appropriate Signal Reception Location (Time
Calibration Signal)" (page E-11).
The second hand will point to R (RC) while time calibration signal reception is in progress.
Reception normally takes anywhere from about two to ten minutes, but it can take as long as
20 minutes.
When the receive operation is successful, the time and day settings will be adjusted automatically.
You can disable auto receive if you want. See "Using the Watch in a Medical Facility or Aircraft"
(page E-8).
E-12
Crown Operations and Configuring Settings
Before performing a crown operation, rotate it towards you to unlock (unscrew) it.
Important!
In order to prevent loss of water resistance and damage due to impact, make sure that the crown is
fully pushed in to its normal position after operating it.
Operation details: Operation Guide available at the CASIO website.
https://world.casio.com/manual/wat/
Home City (Time Zone) Setting
1. In the Calendar Mode, pull the crown out to the second click.
Rotate the crown to move the second hand to the time zone you want to select.
Tokyo (+9 offset)
E-14
User's Guide 5636 (MTG)
Day of the week:
SU, M, T, W, T, F, S
Mode: ST (Stopwatch), TR (Timer),
AL (Alarm)
Time zone (9 position)
Time zone setting (+)
Time zone setting (–)
General Guide
24-hour hand: Current time
• Auto adjust:
Enabled (Y)/Disabled (N)
• Auto adjust:
Successful (Y)/Failed (N)
Alarm status: ON, OFF
Dual Time dial
Bluetooth connection: C *
* Hold down D for at least 2.5 seconds to establish a Bluetooth connection with a phone.
Timekeeping (Based on a Time Calibration Signal)
Appropriate Signal Reception Location (Time Calibration Signal)
Keep the watch away from metal and position it so its 12 o'clock side is
facing a window. Avoid moving the watch as much as possible and do
not perform any watch operations while a signal receive operation is in
progress.
●
You may experience time calibration signal reception problems in
the areas described below.
- Among or near buildings
- While riding in a vehicle
- Near household appliances, office machines, mobile phones, etc.
- On a construction site, in an airport, or any other location where radio
wave interference occurs
- Near high-voltage lines
- In mountainous areas or behind a mountain
Always check the time setting on the day there should be a switch
between standard time and summer time (DST). If the setting is not
correct (due to signal reception failure), turn DST on or off manually as
required.
Time Calibration Signal Manual Receive
If the watch is currently paired with a phone, perform the required watch operations to unpair them.
For details, see the Operation Guide available at the CASIO website.
https://world.casio.com/manual/wat/
1. Hold down D for at least 0.5 seconds until the second hand moves
to R (RC). If the second hand is a position other than R (RC), keep D
depressed until it moves to R (RC).
2. Place the watch near a window.
The time setting will be adjusted automatically when a signal receive
operation is successful.
Calibration signal reception normally takes anywhere from about two
to 10 minutes. It can take as long as 20 minutes.
Best reception is in the middle of the night.
Second hand
Dual Time City (Time Zone) Setting
1. In the Calendar Mode, pull the crown out to the first click.
Rotate the crown to move the second hand to the time zone whose date and time you want to view.
New York (
5 offset)
–
Hour and minute hands: Current time
Crown
Click 2
Click 1
Time signal reception in progress
E-9
12 o'clock
E-11
E-13
Time zone (55 position)
Time zone setting (+)
Time zone setting (–)
E-15
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