7k and use it at 30fps and wifi settings

7k functioned a LOT better and audio was fine

I played around with it thinking it was POV/FOV settings (narrow/medium/wide) and I couldn't see any change in lens zoom

4K seem to not want to playback very smoothly but it could be the older PC I have trying to push high res to 3 monitors and the 4K res as mentioned previously

i honestly think for the price, it's a great deal

1 KHzBit depth : 16 bitsStream size : 27