The device transmits waves to the car radio, which plays sound from a player connected to the transmitter, an SD memory card, or a USB flash drive, for example. flash drive. Installation: Simply set any frequency on the radio (step by 0.1 MHz). Then connect a cable with a jack connector to the player, insert the SD card or connect a flash drive to the USB port, and then press PLAY. Product Features: - new audio processor with Clear FX function - clear surround sound - full frequency range 25Hz - 44 kHz, playing deep bass and treble - file support: MP3 - memory support: PENDRIVE, SD, MMC, microSD - LCD display - movable head, allowing the transmitter arrangement to be adapted to any car interior - built-in equalizer - remote control equipped with 20 buttons In the package: - transmitter - jack cable - remote control - original packaging (blister)