The device claims to do 1080p60 Motion-JPEG. I don't know if it actually works and there's no guarantee a similar looking device will be exactly the same. See also [1], their device falsely claimed to be USB3 and only did 1080p30. In practice, none of the tools I use let me specify the frame rate anyway.

  $ v4l2-ctl  -D -d /dev/video0 --list-formats-ext

   [0]: 'MJPG' (Motion-JPEG, compressed)
    Size: Discrete 1920x1080
     Interval: Discrete 0.017s (60.000 fps)
     Interval: Discrete 0.033s (30.000 fps)
     Interval: Discrete 0.040s (25.000 fps)
     Interval: Discrete 0.050s (20.000 fps)
     Interval: Discrete 0.100s (10.000 fps)

[1] http://ciko.io/posts/cheap_usb_hdmi/