TomTom Runner 3 User Manual page 35

You could also put one earbud in one ear so you can hear the audio feedback during pairing.
3. Press UP from the Clock screen.
Your watch searches for headphones.
4. If only one set of headphones is found, pairing starts.
Note: If more than one set of headphones are found, move at least 10m away from the other
sets of headphones.
5. When pairing between your watch and headphones is successful, a tick appears with the name
of your headphones shown.
You can now start listening to music played on your watch!
When you start an activity, you see a music screen with your current playlist.
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