Exactly as advertised with prompt delivery - Thanks you

Really good! Great alternative to action sport cameras. Good battery development and sharp image in 4K. Very nice!

Works great! I recommend getting the touch screen version though, it doesn't cost much more and is worth the extra.

I found the Dragon Touch Vision 3 camera to be as good as any of the other well known cameras. Right out of the box it was very easy for a non-techie to start using. This camera is user friendly so that you don't need to spend a lot of time figuring out how to use it. You can start taking video within a few minutes.

Mechanically it could be smoother, but it does perform excellent polarization filtering!My camera auto focuses very well with THIS filter!(Previously I bought a AGFA brand filter that was HORRIBLE!)

Automatically turns on and connects when you remove it from its case. Also like that is show remaining battery life when you put it back in its case.

I have been using this filter primarily to get rid of glare in my webcam setup so my requirements may not be as stringent as for more classical applications. Compared to a Nikon filter I have (of a different size, for a different lens), the polarization effect is a bit lower on the Tiffen, and it also lets through more light. Contrary to some comparisons I've seen online though, the Tiffen for me produces a warmer picture than the Nikon.