Monster RadioPlay 300 Universal Full Spectrum FM Transmitter MBL-FM XMTR300 (Discontinued by Manufacturer) Listen to your portable audio tunes through your cars FM radio wirelessly. Tune into any FM station, excluding 87.7 MHz and 87.9MHz. 3 DIGITAL memory pre-sets for fast and convenient access. For use with iPod, portable MP3, CD and DVD players and laptops. Connects to headphone jack on portable audio players.