A:Answer Hi Sal!
Thank you for your inquiry!, unfortunately the headphones WH-CH520 do not support headphone jack, they are wireless headphones. If the headphone jack is a must, you may take a look to the WH-CH710N which have similar features but also have a headphone jack.
Thanks for choosing Sony!
Gus
https://helpguide.sony.net/mdr/whch710n/v1/es/contents/TP0002753226.html