1. Front Aux in & USB port 2. ESP, Electronic Audio Control 3. SD/MMC card slot 4. MP3 ... file displayMP3 track/file/character searchOver ten seconds ESP for CD and 40sec ESP for MP3Four channels x 40W, maximum power outputFour ... colour One Din driver car mp3 player, USB/SD Slot, ESP, Electronic Audio Control, Preset EQ, Full function Remote control