A:Answer My husband tells me that the ear buds block background noises really well He actually has to take the buds out to hear me talking. Yes, there can still be TV audio on in the room when the buds are in use. If you are using it, you would only hear what you want through the buds and not the TV. If you are talking about Bluetooth, then I think it depends on what you choose to be synced. For example, do you want your sound bar to be synced or the ear buds.
If your Vizio television has Bluetooth, they'll work. These headphones do not have USB, they are Bluetooth only, that's why they're wireless. The only USB they have is so they can charge into a power outlet, not connect to sound.