Apple's speaker and microphone article starts with software: update the watch and iPhone, then check whether anything is blocking the microphone or speaker ports. Debris can be rinsed off by holding the watch under lightly running, warm, fresh water, and on a Series 10 or later you can brush the speaker ports gently with a soft bristle brush; do not use cleaning liquids, sprays or abrasives. To check for water, put the watch speaker-side down on a lint-free microfiber cloth and dry it;
do not use heat, compressed air or sprays, do not put anything sharp in the ports and do not shake the watch. Charging overnight can speed up evaporation. Then restart, check Silent Mode and Do Not Disturb in Control Center, and turn up alert volume in Settings, Sounds and Haptics. Automatically Adjust Volume, in watchOS 26 and later, changes alert volume to your surroundings; you can turn it off. If nothing works, unpair and pair again.
Differential
Likely causes of “Apple Watch speaker or microphone is muffled”, and how to tell them apart
- 1
Debris or dried residue in the ports
What separates it The sound is muffled or crackling because of debris or dried residue in the ports
How to confirm Rinse gently in warm water, and brush a Series 10 or later with a soft bristle brush
- 2
Water in the speaker
What separates it The sound is muffled after swimming or a shower because of water in the speaker
How to confirm Eject water with the crown, dry speaker-side down
- 3
Silent Mode or Do Not Disturb is on
What separates it There is no alert sound at all because Silent Mode or Do Not Disturb is on
How to confirm Check Control Center for the bell and moon
- 4
Alert volume is low
What separates it The sounds are faint because the alert volume is low
How to confirm Set Level to Louder in Settings, or turn off Automatically Adjust Volume
- 5
A software glitch
What separates it The sound stops after an update because of a software glitch
How to confirm Restart both, then unpair and pair again if needed
- 6
Damaged membrane or port
What separates it The sound is distorted even when clean and dry because of a damaged membrane or port
How to confirm Book Apple service, since a damaged membrane or port needs a technician
Before you touch a setting
Record this first — changing settings destroys the evidence
- Whether the speaker, the microphone or both fail
- Whether the watch has been in water and how long ago
- Whether Silent Mode, Do Not Disturb or low alert volume are on
Try in this order
0 of 7 completedUpdate both devices
ReversibleUpdate both devices, by updating the watch and the iPhone to the latest software, and then test again to see whether it helped.
Check the ports
ReversibleCheck the ports, by looking at the microphone and speaker ports for debris, and then test again to see whether it helped.
Rinse gently
ReversibleRinse gently, by holding the watch under lightly running warm fresh water if it is dirty.
Dry speaker-side down
ReversibleDry speaker side down, by placing it on a lint free microfiber cloth and letting it dry.
Check Silent and Do Not Disturb
ReversibleCheck Silent and Do Not Disturb, by looking at the bell and moon icons in Control Center.
Raise the volume
ReversibleRaise the volume, by opening Settings, Sounds and Haptics, and moving the Level to Louder.
Restart, then unpair
ReversibleRestart, and if it persists unpair and pair again, restoring from your backup, and then test again to see whether it helped.
Model-specific
What is true of this model and not of its siblings
- Audio hardware by model
- Apple's tech specs: Ultra 2 with a three-microphone array with beamforming and wind-noise mitigation and dual speakers; Series 10 with a microphone with voice isolation and a speaker that doubles as an air vent; the SE 2 lists a microphone and a speaker or air vent.
- Where the ports are
- Apple's article labels the microphone and speaker on the case side; on the Ultra some case holes are depth-gauge openings and not audio ports.
- Repair cost
- Cleaning and drying cost nothing. A dead speaker or microphone is repair: Apple's out-of-warranty battery service is $99 and repair fees ran from $199 for an SE 2 to $499 for an Ultra at launch, per MacRumors.
- Other models this page answers
- These steps also fit the Apple Watch Ultra, Apple Watch Series 6.
Stop boundary
When this stops being a self-service repair
- !If a clean, dry watch is still distorted after a restart and an unpair, book Apple service
- !If sound was lost after a spill or dive, stop using the watch and book service
- !If only calls fail, try a Bluetooth headset to isolate the watch
Evidence ledger
Sources behind this answer
Cleaning the ports, drying the watch, Silent Mode, volume and Automatically Adjust Volume.
Ejecting water from the speaker.
Microphone with voice isolation and speaker or air vent.
Three-microphone array and dual speakers.
The Apple Watch line and its generations.
Exact questions
Common questions
Why is my Apple Watch speaker muffled?+
Usually water or debris in the port. Follow Apple's cleaning and drying steps.
Can I use a brush?+
Apple says a Series 10 or later can be gently brushed with a soft bristle brush; no cleaning liquids or abrasives.
What is Automatically Adjust Volume?+
A watchOS 26 feature that changes alert volume to your surroundings; you can turn it off.
Can I use compressed air?+
No. Apple says not to use heat, compressed air or sprays.
How do I dry it?+
Place the speaker or microphone side down on a lint-free microfiber cloth. Charging overnight can help.
What about the microphone?+
The same steps apply, and voice isolation is on the Series 10.
Why is call audio quiet?+
Check volume, Silent Mode and Bluetooth routing, then the ports.
Is the Ultra different?+
The Ultra 2 has a three-microphone array and dual speakers per Apple's specs.
Can water damage the speaker permanently?+
Repeated exposure and pressure can, and Apple's rating is not a guarantee.