UGREEN Airplane Bluetooth 5.2 Transmitter $27.99 + Delivery ($0 with Prime/ $59 Spend) @ UGREEN via Amazon AU
HamBoi69 
I’ve used these on 4 longhaul flights now and can vouch for them…your own noise cancelling earbuds/headhpones wirelessly connected to the “Entertainment” screen on your flight…amazing. Price seems to go up and down every few months and this is as low as it usually gets.
About this item
Great Flying Companion: Connect the Ugreen Bluetooth 5.2 transmitter in TX mode and transmit audio signals in an airplane or with TVs that do not support Bluetooth to Bluetooth wireless devices. With a transmission distance of up to 10 meters, transmit hassle-free with no need for knotted headphone cables.
30-Hour Long Battery Life: Get up to 30 hours (TX 30H/RX 20H) of audio playback; charge via USB-C port, adding speedy charging and convenience to charging at any time.
Dual Pairing for Shared Music: Connect two AirPods or wireless Bluetooth headsets simultaneously via the Bluetooth receiver. Share musical and visual experiences with close lovers or friends during a flight with ease.
Wired Devices? No Problem: In RX mode, you no longer have to worry about connecting to car, boat, or gym equipment sound systems. Use the Ugreen Bluetooth receiver to perfectly connect and receive audio signals from your mobile phone, tablet, laptop, and more.
Note: Only RX mode supports microphone call use; various Bluetooth receiving devices have varying distances from the adapter; distance is determined by the better the antenna performance of the receiving device.
