The InLine Bluetooth Flight Audio Adapter wirelessly transmits the audio signals of the in-flight entertainment program via Bluetooth in the highest quality to your favorite headphones, whether they are in-ear, on-ear, or over-ear. The adapter is compatible with standard single, dual, and triple-pole systems and also features a USB port. Power is ensured even on long-haul flights through a battery and a charging case. Additionally, the Bluetooth Flight Audio Adapter can easily be used as a battery-operated Bluetooth transmitter (sender) for audio sources with a 3.5 mm stereo jack. This allows you to stream Bluetooth audio to your headphones even while on the go, away from the airplane.