The Relay transmits high-quality audio at a low latency, meaning there’s minimal delay or lag in audio. It also comes with intuitive LEDs that allow you to easily connect two devices, meaning you can share audio with a friend or family member while you fly. It’s long-lasting, too, with a 20-hour battery life. But if you run out of battery on a long flight, worry not: You can plug the Relay into seat outlets with a USB cord and still use it all flight long. Through built-in controls, you can adjust volume, reconnect, pair, clear pairing history, and see battery level. Check out some more promising reviews of the Avantree Relay: “Easy to connect to the airplane viewing system and my Bose noise cancelling headphones. Great sound quality for the long plane trip. Comes with all needed accessories and adapters which was handy in addition to the carrying case. I am still surprised that some airplanes do not have screens with Bluetooth capabilities, so this came in handy.…