I am selling this item because I didn't quite like it after using it for a short time. I believe the usage time is less than 1 hour. It is a beautiful item, but it is a used item, so please purchase only if you understand. Price negotiation is possible. If you have any other questions, please ask. - Model name: DT 990 PRO - Impedance: 250 Ω - Brand: beyerdynamic - Package contents: With original box Thank you for looking.