A:AnswerSorry, I can't answer. I didn't think to even check. Once I tried it and it worked, I discarded all the packaging. But it works fine for my purpose.
I have an older receiver (no Bluetooth) and outdoor speakers I use on my deck and wanted a way to hookup my cellphone to the receiver so that I could stream Pandora from my phone using the headphone jack to the line in on the receiver and have enough slack to put the phone in a safe spot.
So this one works fine for me. If that helps you any.