Sony Measurement Microphone Originally Shipped With: DAVHDX277WC, DAV-HDX277WC, DAVHDX501W/S, DAV-HDX501W/S, STRDH550, STR-DH550 This Is A True Sony Part! Item Is Brand New DAVHDX277WC, DAV-HDX277WC, DAVHDX501W/S DAV-HDX501W/S, STRDH550, STR-DH550 OEM Sony