If you took two seconds to read the instructions you would see they are only wireless. I got these to prevent that from continuing, and to prevent little bits of cushion being on my face and ears after workouts. I ordered a size 8, although they fit more like a size 7. 😊 Seemed to charge at a reasonable speed though I’ve never timed how long it takes my phone to charge. I didnt expected to be perfect but it is. Ive been wearing them exclusively since they came into existence and they are the best shoes I have ever worn (and I have some pretty nice shoes to compare them with). They should include these in the box, but they dont. 4G or Bluetooth, device. If I did it over I would put the money towards a new controller, which now come with a headphone jack since the Xbox One S I have a most comfortable pair of shoes.