Thank you for viewing. This is the beyerdynamic T1 2nd Generation. Operation has been confirmed, but it is an older item. Please review the description and photos before purchasing. The headband has been removed due to hydrolysis, and a simple substitute (top in photo 9) was used. Some of the original material (urethane-like) is still attached, and the substitute is thin. The part that adjusts the position of the headphones (the protruding part on the inside of the headphones in photo 9) touches the head, so you may need to modify that yourself. Accessories include the case in photo 1 and a 3.5mm to 6.3mm conversion plug. The conversion plug may not be the one originally included. You can purchase without any comments. Price negotiations are not possible.