I bought this Bluetooth transmitter to use with my old TV and it works perfectly. It paired quickly with my wireless headphones and the sound is in sync—no annoying lag while watching movies. The setup was super easy: just plug it into the headphone jack, power it on, and pair. I even tried it with my car’s AUX port and it worked great there too. Now I can enjoy wireless audio on devices that never had Bluetooth. Solid range, compact design, and great value for money