No possibility to use wifi directly. That is, it is absolutely necessary to go through your internet box to use it. (I, who wanted to use it on the go to see my movies on TV Hotel ... he missed)
Really very few compatible applications.
Even with compatible applications is very slow! (My tablet, my box and my Chromecast are yet in the same room, I can not do better by optimizing wifi!)
The "caster screen" to see his tablet screen on the TV is very interesting, but again, when I want to watch a movie, it's very random. Idling movie and the connection is lost every 10-15 minutes ...
I took it because it was on sale ... and I think it is already expensive for what it does.