Brand New Twelve South AirFly SE Bluetooth wireless audio transmitter. It allows users to connect wireless headphones to wired audio jacks found on devices like in-flight entertainment systems and gym equipment. Functionality: Streams audio from non-Bluetooth devices to wireless headphones. Battery Life: Offers 20+ hours of use on a single charge. Connectivity: Connects via a standard 3.5mm aux jack. Recharge: Recharges using USB-C.