Unwanted gift, never used, perfect for air Traveller using their own noise reduction headphones.

Below is the product description from SNAP website:

Meet the AiraSound, the travel essential designed to make flying easier and your audio clearer. Powered by Bluetooth 5.4, it lets you connect any Bluetooth headphones or earbuds to the in-flight entertainment system, so you can skip the airline headphones and use your own. With 7 to 9 hours of playtime, it’s built to last the entire flight. And thanks to dual connectivity, you and a friend can listen to the same movie or show at the same time.