Has 3 ways to connect:
1) FM transmitter over-the-air,
2) FM transmitter direct inline with antenna,
3) direct aux in
#1 is the normal FM transmitter mode that is subject to a lot of interference. #2 is surprisingly good. This is what I'm using since I don't have an AUX in available. No noticeable interference. #3 sounds perfect (tried it in another car).
Incredible deal at $18.99. I bought two.

It comes with a cigarette lighter adapter, as well as the wires to hard-wire it into your car.

Yes