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How to Turn Off the Button Beep on a Casio Watch

Casio button-tone controls vary by module. Find your module number, then use its manual to switch KEY or KEY♪ to MUTE—or toggle the setting with the correct button sequence.
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To turn off the button beep on a Casio watch, use the procedure for its module number: some models toggle the tone by holding a button, while others require changing a setting in Timekeeping Mode. Check the number on the case back or in the watch’s documentation, then open the matching Casio manual. In the manuals below, KEY or KEY♪ means the button tone is on; MUTE means it is off.

Find your Casio module number first

There is no single button sequence for every Casio watch. The module number identifies which instructions apply; the model name alone may not be enough. Look for the number on the case back or in the watch’s documentation, then find that number in Casio’s official manual search. The examples here cover six modules, not every Casio watch.

Turn off the button beep on these modules

Module How to change the setting What the manual says about other alerts
3136 From any mode except a setting screen, hold C for about three seconds to toggle the button tone. Holding C also changes the watch’s current mode. When the tone is off, a mute indicator appears in all modes. Casio Operation Guide 3136. Alarms and the hourly time signal continue normally.
3202 In Timekeeping Mode, hold A until the city code flashes. Press C until MUTE or KEY appears, press D to switch, then press A to exit. Casio QW-3202. Alarms, the hourly time signal, and the countdown timer alarm continue normally.
5581 Use the Timekeeping setting screen to reach the button-operation-tone item, press D to toggle it, then exit. Follow the manual for the exact entry and navigation sequence. Casio User’s Guide 5581. Not stated in the cited manual passage.
5576 Use the Timekeeping setting screen to reach the button-operation-tone item, press D to toggle it, then exit. Follow the manual for the exact entry and navigation sequence. Casio User’s Guide 5576. Not stated in the cited manual passage.
5640 Hold A for at least two seconds until ADJ appears. Press C to reach Button Operation Tone On/Off, then use B or D to change the setting. Follow the manual to exit the settings. Casio User’s Guide 5640. Not stated in the cited manual passage.
5561 Use the Timekeeping setting screen to reach the button-operation-tone item, press D to toggle it, then exit. Follow the manual for the exact entry and navigation sequence. Casio User’s Guide 5561. Not stated in the cited manual passage.

What KEY, KEY♪, and MUTE mean

On the cited manuals, KEY or KEY♪ indicates that the button-operation tone is enabled. MUTE indicates that it is disabled. After changing the setting, check the display or press a button to confirm the tone has stopped; if your watch’s labels or controls differ, return to its module-specific manual rather than trying a sequence from another model.

Button beeps are not the same as alarms

Muting the sound made by button presses does not necessarily silence other watch sounds. The 3136 and 3202 manuals explicitly say that their listed alarm functions continue when the button tone is off. The 3202 manual also names its countdown timer alarm. For the other modules listed above, the cited instructions do not establish whether alarms are affected, so check the relevant manual’s alarm section if you need to silence those separately.

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