This viral wireless dongle lets you share your audio on a flight - how it works

The article is a review of the Twelve South AirFly Pro 2 Bluetooth adapter, highlighting its ability to make in-flight entertainment wireless, dual-headphone support, improved audio via an upgraded Qualcomm chip, physical volume buttons, 25-hour battery life, and aux-in compatibility; the reviewer recommends it at about $60 for frequent flyers while noting a cheaper SE variant lacks some features.