This is arguably the strongest selling point of the D11 model.

Modern headphones use soft protein leather or velour. The DR-11 uses open-cell polyurethane foam wrapped in a thin vinyl skin.

If you are looking for affordable, reliable wireless headphones, the Sony WH-CH520 (often identified by the hardware ID D11) has become a go-to choice in the budget category. They are the successors to the popular CH510 model and offer significant improvements.

Here is a comprehensive breakdown of what you need to know about these headphones.