Product Name: FM TransmittersModel Number: NDF38Place of Origin: ChinaFunction: 1) Seven frequency optional 2) Using ROM 1417 ship set 3) It adopts the latest 3D technology, and phase lock 4) Loop technology, which ensures stable frequency radiation while functioning at a distance of up to 30m without dead areas so that you can still enjoy 5) Hi-fi music at home or in car 6) Powered by cigar lighter of the car (12VDC)