I am selling these headphones because I purchased another pair. They show signs of use, but there are no issues with their functionality. They were mainly used indoors. As I didn't use the wireless function very often, I believe the built-in battery has experienced only minor degradation. The case and box show no noticeable scratches, and in addition to the original cord, I will also include a third-party wired cord with a microphone. These are comfortable, black wireless headphones with active noise cancellation. - Model Name: QuietComfort 35 - Features: Active Noise Cancellation - Connectivity: Wireless - Color: Black - Features: Comfortable fit Thank you for looking.