Look up 'Bluetooth transmitter' on Amazon
You will find a small box that plugs into the L/R line out on the back of the Genos, and transmits the audio to anything you like (speaker, headphone) via Bluetooth
Disclaimer : I've not done this myself yet, but I'm going the other way - I've ordered a Bluetooth receiver to plug into AUX IN so that I can play sources in through AUX IN.