Good day
Since I can't test this, I unfortunately don't know. I can only say that the smartphone connection works via Bluetooth.

Greetings Manfred

I don't think it works. I can play music from my mobile via Bluetooth through the Panasonic.

No, the system's Bluetooth is a receiver for your transmitting devices, not the other way round. This system has a mini jack headphone output for headphones. However, if you want to connect your Bluetooth headphones, there are adapters that can be plugged into a headphone jack and send via Bluetooth. However, you won't get any better sound from your system than if you pair your mobile phone directly with your headphones. I hope my answer has helped you, and I wish you a very good day!