This is the Aftershokz (now Shokz) Aeropex bone conduction headphones. I used them for running, etc. They work fine for everyday listening, but the connection is sometimes poor, and the left ear may experience sound distortion depending on the angle of my head. (The right ear works, so maybe I'm used to it, but it doesn't bother me that much.) Please understand that this is a used item as described above before purchasing. Although there is no bag or case, I will include the dedicated charging cable. Please feel free to comment if you have any questions.