Westinghouse 4K Ultra HD TV: Bring your favorite entertainment to life with this TV, which features 2160p resolution for vivid, detailed images. Built-in Wi-Fi enables simple streaming, and HDMI inputs let you connect a variety of HD devices.
I got this TV as a Black Friday deal for $250 online. I was a little skeptical because the brand, and this was replacing my 40" 1080p Samsung TV that I spent about $800 5 years ago. After mounting on my wall I was amazed; the picture was incredible especially coming from a TV that I only spent $250 on. I watched a 4K action movie on Netflix which had even better picture being in UHD 4K, but there is a tiny bit of motion lag which you can barely even tell. Playing Call of Duty also surprised me. I was worried about the TV being 60hz for games, but I noticed no difference from the Samsung.
If you're worried about this TV, don't be. It is a great deal for great performance. If you're going for Super Ultra High Def, then maybe you want to spend 4x the money on a Samsung. For me, this works for me with my Netflix and Video Games.
As for the sound, I use a surround sound system, so I cannot really say, however, when watching a movie on Netflix (through the smart app), the sound was decent. Not grainy or horrible, it sounded like any other TV in my house. If you don't like it, then you can always buy a $70 sound bar.