Enjoy wireless audio with this Twelve South AirFly Pro Bluetooth transmitter. AirFly is a wireless adapter that lets you use your wireless headphones or earbuds in places that only have a headphone jack, like airplanes and treadmills. Plug this tiny transmitter into the headphone jack to listen to in-flight movies or TVs at the gym. The 3.5mm jack pin connects to an aux input for simple streaming, while the built-in battery delivers reliable power for up to 16 hours of use per charge. This white Twelve South AirFly Pro Bluetooth transmitter lets you pair two sets of wireless headphones simultaneously for shared listening. Add the ability to stream music from your iPhone to an AUX IN in a car or speaker.