Link to Xinray U
pgradeable and
English Hikvision equipment page:
http://s.click.aliexpress.com/e/vjMNnUz
Be very careful if you are looking elsewhere on Aliexpress as there are lots of Chinese cameras (can also be know as multi language) that have modified firmware.
With a China region camera or NVR, you may also find the Hik-Connect (Hikvisions remote camera access solution) service may not work.
The main things to make sure of are:
1) The equipment you are looking at has both
upgradeable firmware and is
English.
2) That you buy from a supplier that has been trading a Aliexpress for a few years with high number of sales.
3) The trader has a good feed back rating.
Good luck.