Module No. 5719
Troubleshooting
I can’t pair the watch with a phone.
Q1I’ve never been able to establish a (pairing) connection between the watch and phone.
Are you using a supported phone model?
Check if the phone model and its operating system are supported by the watch.
For information about supported phone models, visit the CASIO Website.
Did you install the CASIO WATCHES phone app on your phone?
The CASIO WATCHES phone app needs to be installed on your phone in order to connect with the watch.
Install the required app on your phone.Are your phone’s Bluetooth settings configured correctly?
Configure the phone’s Bluetooth settings. For details about setting procedures, see your phone documentation.
iPhone Users
“Settings” 
“Bluetooth” On
“Settings” “Privacy” “Bluetooth” “CASIO WATCHES” On
Android Users
Enable Bluetooth.
Is a stopwatch or timer operation being performed?
The watch cannot pair with a phone while a stopwatch time measurement operation is in progress. Stop the measurement operation and then pair with a phone.
Other than the above.
Some phones need to have BT Smart disabled to use the CASIO WATCHES phone app. For details about setting procedures, see your phone documentation.
On the Home Screen, tap: “Menu” “Settings” “Bluetooth” “Menu” “BT Smart settings” “Disable”.
I can’t reconnect the watch and phone.
Q1The watch will not re-connect with the phone after they are disconnected.
Is the CASIO WATCHES phone app running?
The watch cannot re-connect with your phone unless the CASIO WATCHES app is running on the phone. On your phone’s Home Screen, tap the “CASIO WATCHES” icon. Next, on the watch, hold down (C) for at least two seconds.
Have you tried turning your phone off and then back on again?
Turn your phone off and back on, and then tap the “CASIO WATCHES” icon. Next, on the watch, hold down (C) for at least two seconds.
Is the watch’s battery charged sufficiently?
Connection with a phone is not possible while the charge is low. Charge the watch and then connect with the phone.
Is a stopwatch or timer operation being performed?
The watch cannot connect with a phone while a stopwatch time measurement operation is in progress. To connect, stop the measurement operation and then hold down the watch’s (C) button for at least two seconds.
Q2I can’t connect while my phone is in the Airplane Mode.
Connection with the watch is not possible while your phone is in the Airplane Mode. After disabling the phone’s Airplane Mode, go to the phone’s Home Screen and tap the “CASIO WATCHES” icon. Next, on the watch, hold down (C) for at least two seconds.
Q3I changed the phone’s Bluetooth from enabled to disabled, and now I can’t connect anymore.
On your phone, re-enable Bluetooth, and then go to the Home Screen and tap the “CASIO WATCHES” icon. Next, on the watch, hold down (C) for at least two seconds.
Q4I can’t connect after turning off the phone.
Turn your phone off and back on, and then tap the “CASIO WATCHES” icon. Next, on the watch, hold down (C) for at least two seconds.
Phone-Watch Connection
Q1I can’t establish a connection between the phone and watch.
Have you tried turning your phone off and then back on again?
Turn your phone off and back on, and then tap the “CASIO WATCHES” icon. Next, on the watch, hold down (C) for at least two seconds.
Is the watch’s Airplane Mode enabled?
Connection with your phone is not possible while the watch’s Airplane Mode is enabled. To connect with your phone, disable the Airplane Mode.
Has the watch been re-paired with the phone?
After deleting the pairing information from the CASIO WATCHES phone app and your phone, re-pair the watch and phone.
Pair the watch with a phone.If you are unable to establish a connection...
After deleting pairing information from the watch, re-pair it with your phone.
Changing to a Different Phone Model
Q1How do I connect my watch to a different phone?
Delete the pairing information from your watch and then pair it with the phone you want to connect with.
Auto Time Correction by Bluetooth Connection (Time Correction)
Q1When does the watch correct its time?
Your watch can connect with a paired phone to correct its time setting. The watch will connect with the phone and perform auto time correction 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 correction is complete.
Q2Auto time correction is performed, but the time setting is not correct.
Is auto time correction not being performed according to its normal schedule?
Note that auto time correction is not performed for 24 hours after swapping of the Home Time and World Time, or after the time setting is corrected manually on the watch. Auto time correction will resume 24 hours after either of the above operations is performed.
Is auto time correction enabled?
Auto time correction will not be performed at the scheduled times if it is not enabled. Establish a connection between the watch and phone, and then use the CASIO WATCHES phone app to enable auto time correction.
Is the watch’s battery charged sufficiently?
Connection with a phone is not possible while the charge is low. Charge the watch.
Is a stopwatch or timer operation being performed?
Auto time correction will not start at the scheduled times if a stopwatch time measurement operation is in progress. Stop the measurement operation.
Q3Even if I press (C), the watch does not sync its time setting with my phone.
Connection with your phone is not possible while the watch’s Airplane Mode is enabled. To connect with your phone, disable the Airplane Mode.
Q4Time 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 correct the time setting.
World Time
Q1The time for a World Time City is not correct.
The summer time start date and time, end date and time, or other rules were changed by authorities.
Q2After swapping your current location (Home City) time with the World Time, the World Time City time is not correct.
Use the CASIO WATCHES phone app to specify a World Time City.
Alarm
Q1The alarm does not sound.
Is the watch’s battery charged?
Keep the watch exposed to light until it recharges sufficiently.
The crown is pulled out.
The alarm will not sound while the crown is pulled out. Push the crown back in to its normal position.
Is the alarm enabled?
Enable the alarm.
Hand Movement and Indications
Q1I don’t know what mode the watch is in.
You can determine the current mode by checking the mode hand position. Use the (A) button to navigate between modes.
Q2Why can’t I perform any button operations while high-speed hand movement is in progress?
Except for the mode navigation button, button operation is disabled while high-speed hand movement is in progress after a watch setting is changed, etc. Wait until the hands stop moving before performing button operations.
Q3The second hand is jumping at two-second intervals.
Battery power is low. Keep the watch exposed to light until it recharges sufficiently.
Q4All hands are stopped at 12 o’clock and buttons do not work.
The battery is dead. Keep the watch exposed to light until it recharges sufficiently.
Q5The hands suddenly start moving at high speed.
This is due to the reason (or one of the reasons) below, and does not indicate malfunction. Simply wait until normal hand movement resumes.
The watch is recovering from a power saving state.
Watch is connected with a phone to correct its time setting.
Q6Hands 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.
Q7The 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. Correct hand and/or day indicator alignment.
Check the information below to find out how to align the hands and/or day indicator manually.
Q8The time setting is correct, but the day indicator is between days.
Is the date setting being updated?
For information about how the day changes, see the section below.
Other than the above.
The day indicator is not aligned correctly. Correct day indicator alignment.
Check the information below to find out how to align the hands and/or day indicator manually.
Crown Operations
Q1Nothing 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.
Q2Crown operation does not work.
Crown operation is disabled while high-speed hand movement is in progress after a watch setting is changed, etc. Wait until the hands stop moving before performing crown operations.
Charging
Q1The watch does not work even though it is exposed to light.
The watch stops operating whenever the battery goes dead. Keep the watch exposed to light until it recharges sufficiently.
Other
Q1I can’t find the information I need here.
Visit the website below.