Pros:
-AirFly stays charged for eight hours and includes a USB charging cable and travel pouch.
• Allows wireless headphones to connect to wired headphone jacks
• Use to pair AirPods with airline in-flight entertainment systems
• Listen to your health club’s TVs with your wireless sport headphones
• Built-in battery lasts up to 8 hours & recharges via USB
Cons :
Very useful. No cons on this one.