Bluetooth Transmitter/Receiver,BENEO 2-in-1 Wireless 3.5mm Adapter (APTX Low Latency, 2 Devices Simultaneously, For TV/Phone/MP3/Car/Speaker/PC/keyboard/Mouse and More) (30 Hours Playtime)

Bought this so I could use my Bluetooth/wireless headphones while flying. This adapter is great, easy to connect and plugs directly into the standard 3.5 mm plug in the airplane. I can't vouch for the 30 hour playtime but is did last for at least 15 hours on my last trip to Europe without any connection or interference issues. I have also used this to connect my iPhone to an older stereo system through the headphone jack and it worked just as well as the plane even when I went into another room that was about 20 feet away. I would recommend it to anyone that travels and wants to use their Bluetooth/wireless headphones to watch and listen to the in-plane entertainment.

Works well, fidelity could be better.