If you're deaf or hard of hearing in one ear, mono audio can help make sure you still get all the sound.
With a Bluetooth headset, you can listen to audio right from your Apple Watch. Stereo audio, however, can have separate sound in each channel — left or right. Mono audio puts all the sound into both channels — left and right. That way, whether it's music or talk, you won't miss anything.
How to turn on mono audio on your Apple Watch
- Launch the Apple Watch app on your iPhone.
- Tap on the My Watch tab.
- Tap on General
- Tap on Accessibility.
- Toggle Mono Audio to ON