AK3046E wireless adapter is designed for in-flight entertainment systems.

Engineered with the latest Bluetooth 5.0 technology More Stable, More Reliable.

the Bluetooth transmitter with rechargeable batteries, can last for 7 hours playtime on single charge.

One
of the jacks folds in, making it ideal for both in-flight entertainment
that requires the classic single-pronged jack as well as the 
two-pronged jacks typically found on international flights.

Easy
Operation: ? Install the transmitter into the aircraft audio plug, ? 
pair with Bluetooth, and after successful pairing, play the music 
normally.

Works with 3.5mm audio devices including in-flight entertainment systems, computers, car, and gym equipment.