This is a Griffin ITrip, which allows you to stream music via your car audio FM station from an IPod or an IPhone. It is in perfect working condition. We used it a lot, but it connects to the old IPhones, which is why we can't use it anymore, as my husband now has a more recent IPhone.
It is the same as the one on the below link, but all black.
FM transmitter (Winton BH9)
This offer has been gifted to someone and is no longer available.