[WIDE COMPATIBILITY] The Relay works with any device that outputs audio via AUX (i.e. planes, TVs, gym equipment, etc.) and can connect to any and all Bluetooth headphones or earbuds (i.e. AirPods Pro 2). The included dual 3.5mm adapter also makes the Relay usable on any flight, regardless of connector type. | [APTX SUPPORT] With aptX-Adaptive and aptX-Low Latency codec support, the Relay transmits high-quality audio at a low latency when used with applicable listening devices. The Relay also utilizes Bluetooth 5.3 technology for stable, reliable connections. | [LISTEN TOGETHER] The Relay’s intuitive LEDs allow you to easily connect up to two devices and share the audio with a friend while you fly. | [LONG BATTERY LIFE] A battery life of up to 20 hours provides sufficient battery life to last throughout your air travels. If the battery does run out, simply plug the dongle in and continue to use it while it charges. | [EASY CONTROLS] Adjust the volume, pair, reconnect, clear pairing history, and show battery level with the Relay’s built-in controls. Monitor your connections and battery levels with its convenient LED indicators. | [TRUSTED FOR DECADES] With over 20 years of innovation in Bluetooth transmitters, Avantree pairs trusted expertise with premium Qualcomm chipsets to deliver stronger connections & superior audio quality.