The ideal companion for air travel: Connect the Ugreen Bluetooth 5.2 transmitter in TX mode and stream audio signals on airplanes or to TVs that do not support Bluetooth, to Bluetooth devices. It comes with a 3.5mm AUX adapter for various airplane audio connections and has a transmission range of up to 10 meters for hassle-free streaming. With a battery life of 28 hours: Enjoy up to 28 hours (TX 28H/RX 20H) of audio playback; it charges via USB-C for quick charging and convenience at any time. Dual pairing for shared music playback: Connect two AirPods or wireless Bluetooth headphones simultaneously through the Bluetooth receiver. Easily share musical and visual experiences with your loved ones or friends during the flight. Wired devices? No problem: In RX mode, you no longer have to worry about connecting to sound systems in cars, boats, or fitness equipment. Use the Ugreen Bluetooth receiver to perfectly receive audio signals from your mobile phone, tablet, laptop, and more. Note: Only the RX mode supports the use of microphone calls; different Bluetooth receiving devices have varying distances to the adapter; the distance is determined by the antenna power of the receiving device.