Module No. 5658

Auto Time Adjustment

Your watch will connect with a phone at preset times each day and adjust its time settings automatically.

Using This Function

Your watch adjusts its time setting four times a day according to a preset schedule. If you leave your watch in the Timekeeping Mode, it will perform the adjustment operation automatically as you go about your daily life, without any operation required by you.



The watch may not be able to perform auto time adjustment under the conditions described below.

While the watch is too far away from its paired phone

While communication is not possible due to radio interference, etc.

While the phone is updating its system

While the CASIO WATCHES phone app is not running on the phone


If the watch does not indicate the correct time even if is able to connect with a phone, adjust the hand positions.

If there is a World Time City specified with the CASIO WATCHES phone app, its time will also be adjusted automatically.

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.

Triggering Immediate Time Adjustment

The watch’s time setting will be adjusted automatically whenever you establish a connection between the watch and a phone. Whenever you want to trigger immediate time adjustment, perform the procedure below to connect with a phone.

  1. wat_s Enter the Timekeeping Mode.

  2. Move the phone close to (within one meter of) the watch.

  3. wat_s Press (D).

  4. [TIME] flashes to indicate that the watch has started the connection operation. Once the watch and phone are connected, [OK] will appear, and then the watch will adjust its time setting based on information from the phone.



    The connection is terminated automatically after time adjustment is complete.

    If time adjustment fails for some reason, [ERR] will appear.

    [RCVD] flashes when the receive operation starts, and [RCVD] stops flashing after it is complete.