A:AnswerIt comes with the cord attached to it. It is basically one item. No additional cords are needed unless you want a splitter or something. Attached a pic for clarification purposes.
A:AnswerIf you're just speaking to an audience, sure! You can plug it in, it is just an aux cord to a mic
For a call? No, it would not work. They would most likely hear you.. Although, you wouldn't be able to hear them because how the jack is made.
A:AnswerI bought mine at Best Buy, but also see them in all places that sells cell phones accessories; living in NY, should be easy to find, i believe even the cell phone accessories vendors on the streets of the city, should have them.
Good luck
A:AnswerI would recommend the extension for sure. I'd rather have it and not need it. Just being prepared. It is listed in the frequently bought with items for this product.
