Check which codec the two devices support. They may not overlap.

In this case, you are welcome to contact our customer service directly so that the problem can be checked and you can be helped accordingly. Help centre: https://helpcenter.digitec.ch/hc...

Unfortunately, it does not (yet) work on a high-end Sony TV set because of the Swisscom TV box, which cannot receive Bluetooth signals. In spring (2024 ??) the new, Bluetooth-capable TV box should be released...
These buds work perfectly on our new Samsung Galaxy mobile phones, with very good sound!

I can't judge, sorry! I don't have a corresponding television set....;-(