Sondpex FM Transmitter and MP3/WMA Player (PMT302) Built-in brightly lit LCD Display It plays MP3 or WMA music files straight from USB stick or SD card (support memory up to 32 GB) 1/8"/ 3.5 mm AUX input to play music from any mobile devices such as cell phones and MP3 players Built-in memory feature that saves your last played (frequency, song and volume) setting Loop 4 mode: Random-&gt;Repeat Folder-&gt;Repeat All-&gt;Repeat One