I use it to connect my TV to wireless headphones. Pairing with the headphones is relatively easy. The sound has no delay and its quality is good, except for the main drawback that it has a continuous buzzing in the background, which becomes more noticeable when there is no voice or other sound from the TV, and after some time of use, it becomes annoying. I tried it with high-quality JBL wireless headphones to see if the buzzing comes from the first headphones, but it is not the headphones responsible for the buzzing. I don't know if this happens to others, but for me, it is a reason not to recommend it for purchase. I am already looking for another Bluetooth transmitter of better quality to avoid any interference in the sound.

I have tried to connect it to 3 devices...
With one, it never connected and with the other two it connected but the sound is interrupted or not transmitted at all.