1.4 inches LCD screen display. Built-in 2G memory card. Support songs lyric display. Support five EQ mode: normal, rock, soft, jazz and SRS. Support music formats: MP3, WMA, OGG, APE and so on. Support volume modulation and you can increase or decrease the output volume. Support CH frequency modification. Apply to USB device and MP4 player. Built-in FM wireless transmitter and transmitting frequency range: 87.7MHz-107.9MHz. Ideal for you to enjoy the music freely and conveniently in a car. Convenient to operate four function keys or remotely control. Power voltage: DC 12V-24V.