This Twelve South AirFly SE lets you connect your wireless headphones to any device with a 3.5 mm jack using Bluetooth. With a battery life of 20 hours, this one is perfect for in-flight movies when you're in for a long haul. There's a battery indicator, so you'll know when it's time to charge it. You can mute the sound or control volume with just a few taps. Plug into any audio jack to use wireless headphones or earbuds in places that only have a headphone jack like airplanes and treadmills. Up to 25+ hour battery life outlasts the longest flights. SE. The Essential AirFly. AirFly SE is the most affordable way to listen to in-flight movies with your wireless headphones or earbuds. AirFly SE has a 20+ hour battery and a battery indicator so you know when its time to recharge. New Volume controls let you turn sound up or down without touching the seat back screen. Mute the sound with two taps when the beverage cart arrives.