User Manual Vizio D40f-E1 Television

If you search online for vizio and model you can view
the instruction manual/ user set-up that will provide this
information. I know you can connect Bluetooth/cordless
headphones but I have not tried to connect corded
headphones. My tv is at home and I am not. This tv has
had everything I have needed so far and at a great price.

The TV comes equipped with google cast and includes
many free channels accessible by wifi/internet. If you have
internet access no adapter is needed. For cable tv, you will
need whatever your cable provider recommends/ requires.

Not sure I do not have a firestick. The TV does have an
HDMI plug so if the firestick has that type it should work

Yes! It has the HDMI ports. It also will turn on with PS4. You
can also use your TV remote to operate the PS4 as well. I
love my vizio

There is a menu to help you pair devices with the tv. I had
to get close to tv to pair my cell phone. I have not paired my
headphones yet but I know it can be done.

I did not write the specifications. The screen size is 42" and
the TV has Google Chromecast built into the TV