SONY MDR-DS7500 Wireless Digital Surround Headphones

These are SONY wireless headphones equipped with a digital surround processor.

- Brand: SONY
- Model: MDR-DS7500
- Type: Wireless Headphones
- Connectivity: HDMI 3-in/1-out, Optical Digital, Analog terminals available
- Accessories: Optical digital cable, 2 types of power adapters

Purchased around 2013.
Has not been used for charging for the past 5 years, but
operation was confirmed recently.
Due to age-related deterioration, the surface layer of the headband has been completely removed (see photo 8).
The ear pads were just replaced with non-genuine parts last month.