High-Quality Wireless Headphones 9.1ch wireless headphones with VPT technology for an immersive sound experience. - Brand: SONY - Model Name: MDR-HW700DS Thank you for viewing. - Condition: Tested and working - Missing accessories - No manual. Includes power cable, USB cable, optical digital cable, and the main unit. ● Confirmed sound output when PS4 is connected to input 1. However, not tested with other input devices. ● As shown in the photos, there is degradation due to hydrolysis on the parts that touch the head and ears. Shipping will be done with bubble wrap and a paper bag outside the Sony box. I purchased these but rarely used them, and they are only deteriorating, so I am selling them. Please inquire if you have any questions or would like additional photos. ※ I will be away on a business trip from mid-January, so I plan to remove the listing around the first week of January.