Module No. 3577

Recover Support and Health Management

This section explains the operation flow for operations for functions that support the body.

Sleep Measurement (Nightly Recharge™)

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If you wear your watch in bed, you can keep track of your physical condition while you are sleeping and the quality of your sleep. You can view measurement results on your watch and with the phone app.

Getting Ready

Install the “CASIO WATCHES” app on your phone and then pair the watch with your phone.

Before using Sleep Measurement, configure the settings described below.

Performing Measurement

  1. Fasten the watch to your wrist.

  2. img_Wearing_2025
  3. Get your normal sleep.

  4. Measurement begins when the watch detects that you are asleep. Measurement will automatically end when the watch detects that you have woken up.

    img_Sleeping_WakingUp_2025
  5. You can view your sleep measurement results after you have recorded at least three sleep measurements.

  6. To display sleep measurement results, the watch must have recorded at least three sleep measurements within the past 28 days (including the night before).

    img_WakingUp_Check_2025
    3577_125_fl_Nightly

    You can use (C) to scroll between summary screens.

Note

You can view sleep measurement results on your watch. Note that you cannot view sleep analysis results on your watch. Use the CASIO WATCHES phone app to view sleep analysis results.

Breathing Exercise (Breathing Exercise)

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This mode supports stress reduction using guidance that promotes breathing at a slow and stable rhythm. You can view measurement results on your watch.

  1. Fasten the watch to your wrist.

  2. img_Wearing_2025
  3. Start the breathing exercise.

  4. 3577_126-1_fl_BREATHING

    Sit or lie down. Relax your arm and adjust your posture so you can keep your hand still.

    3577_126-2_fl_BREATHING

    After a brief pause, breathing exercise guidance begins.

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    Follow the on-screen animation guidance to breathe slowly. Rhythmically inhale and exhale as directed.
    The watch displays the status of your mind and body in real time.

    3577_126-4_fl_BREATHING
    3577_126-5_fl_BREATHING

    Measurement results are displayed after the guidance ends.

    3516_047_fl_BREATHING

    Use (C) to switch between result screens.

Note

To reach the [OPTIMAL] zone, maintain a pace of six breaths (inhale, exhale) per minute.

Useful Functions

This watch also includes additional features to support your physical and mental well-being. For details, see the information below.

Blood Oxygen Level Measurement

This function measures your blood oxygen level. You can view measurement results on your watch.

Step Reminder

When the watch detects that your step count over a certain period is low, it notifies you and encourages you to walk more. If the watch performs this Step Reminder notification operation, try walking for about five minutes.

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