Excelvan FM Transmitter Car Charger Adapter For MP3/ MP4 SmartPhone Talk, Charge and Play music on the go! Perfect audio transmission function. Compatible with virtually any SmartPhone and MP3/ MP4. Full frequency range design effectively avoids interruption. USB output charging for Mobile Phones, GPS, and other devices Packaging: FM Transmitter with car charger 1PCS; User Manual 1PCS