Just tested the Aver V320 product. Like the facial recognition, wide angle, optical zoom and built in battery. Good for interviews and Skype in the Classroom events. Bit pricey though.
Aver review here: http://www.itpro.co.uk/desktop-hardware/29481/aver-vc320-review
A cheaper competitor with miracast built in from Logitech here:
Now I don't know which one to go for!
Logitech one Lazada here: https://www.lazada.co.th/logitech-conferencecam-connect-7730906.html