これは別売りなのかな？

https://www.sonymobile.com/global-en/products/accessories/usb-type-c-2-in-1-cable-ec270/specifications/
https://s3-eu-west-1.amazonaws.com/prod-bnw-live-aequah2i-resized/blogs.dir/0/files/2018/01/580x/0977-ssxl-mwc-php-creation-wakasa-e1k-desktop-mobile-tablet-4c4724f38880e269e9f319db31356796.jpg

Quick charging is not supported, even with a quick charger connected
Data sync is not supported.
MDR-NC31EM,MDR-NC750 are not supported