I loved the authentication certificate that comes with these as well as the personalized note from the designer.
The sound is amazing and the synch is easy.
I have used them for my 3 hour flight, back and forth, and they barely lasted 3 hours without stating that, "Battery is low, please recharge." This is disappointing. Other wireless earbuds will last much longer for not too much more cost.
Are these only good for a few hours? It never said how long they will last between charges.