A:AnswerThe length of cord from the base of earphones on my headset to my first extension is 48.5 inches. I did not buy an extension since I already had three which I had purchased some time ago at Best Buy. Total length of connection to my TV is 12.5 feet +/- 2 inches. Great earphones at a reasonable price.
A:AnswerThey should work just fine with your system, but you may have to buy an adapter between the headphones and your system. Look to see if the audio pin is compatible with your unit.
A:AnswerI have no idea. Ask Best Buy. I just bought the things. I don't kknow their capability for any other use. Oh, but--they did work for my phone (till I broke it) AND for the airplane audio device, so maybe, probably. But better ask Best Buy.
A:AnswerHi, Berkan! These headphones have built-in microphones. However, it is highly recommended using the dedicated PlayStation headphones for PS4. -Vincent
A:AnswerHi, mouse! Yes, you can replace the battery of the unit. Please refer to this link for more information:
https://www.sony.com/electronics/support/res/manuals/4546/45466050M.pdf
~Ralph
