Many Bluetooth transceivers (a combination of transmitter and receiver) and transmitters are on the market, but only those with the right hardware will support a superior TV experience. The key is to choose one that features Bluetooth aptX with Low Latency (not just Bluetooth aptX) so that the audio will remain synchronized with the video. Otherwise, there will be a delay between what you see and hear.
Lifewire / Miguel Co
If your Bluetooth headphones don't support low latency—or if you intend to upgrade your wired headphones with Bluetooth—you'll need a pair of these Bluetooth transceivers. Set one to transmit mode and connect it to the TV/receiver audio output. Set the other to receive mode and plug it into the 3.5 mm jack on your headphones.