El modelo anterior incluía en el estuche el adaptador para el info-entretenimiento del avión. They are fake! It uses 10 internal transformers, 2 per speaker circuit. They may be quit a bit pricier but worth it for the quality of the product. I never ran in them, just wore them for normal walking. Unfortunately, the amp itself is not a true MOSFET amp and therefore does not put out any bass. Purchased these boots for work. They fit true to size too! These sandals have super comfy soles, and the velcro seems very secure. Not only was it an enjoyable read, but his story really helped me put into perspective just how close I was coming to having a problem with becoming consumed with DFS, and with a new found inside look into the industry, I feel like I know how I can remain a recreational player and have fun.