Callers can’t hear me on Apple Watch

Hello Amonio,

Thank you for reaching out to Apple Support Communities, and we'll be happy to help in any way we can. We understand you're having issues with the microphone on your watch, and we have a few steps that might help to start.

First, make sure both the Apple Watch and paired iPhone are up-to-date:

Update your iPhone or iPad

Update your Apple Watch

Also, we recommend making sure your Apple Watch is clean and free of debris: How to clean your Apple Watch - Apple Support

"Clean and dry your Apple Watch

Keep your Apple Watch clean and dry. Soaps, cleaning products, abrasive materials,* compressed air, ultrasonic cleaning, and external heat sources can cause damage and shouldn't be used with your Apple Watch. 

To clean your Apple Watch, follow these steps:

1. Turn off your Apple Watch and remove it from the charger.
2. If you have a leather band, remove it from your Apple Watch.
3. Wipe your Apple Watch clean with a nonabrasive, lint-free cloth. If necessary, lightly dampen the cloth with fresh water. If your Apple Watch has substances or debris visible in places such as the speaker ports, you can hold your Apple Watch under lightly running, warm, fresh water until it's clean. Soaps and other cleaning products shouldn’t be used.
4. Dry your Apple Watch with a nonabrasive, lint-free cloth, including the surface of the back crystal.

* Apple Watch is manufactured with extreme care and precision, while leveraging state-of-the-art technology to provide the best customer experience. To ensure the watch maintains all functionality and to keep a consistent finish across the enclosure and external components, Apple does not recommend polishing or buffing the watch with abrasives."

Cheers!