Working voltage: 12V; FM: 87~108MHz; Support recording function; Support USB / SD / MMC; Support up to 32GB USB, SD card; Support USB / SD card switch, prev next, volume control, play / pause, stop, repeat, EQ, speed, rewind, mute etc.; Support Bluetooth V3.0 + EDR; Support FAT16, FAT32 file system; Support MP1 Layer3, MP2 Layer3, MP3 Layer3 version; Support 32~320Kbps MP3 files.