Mp4 player portable mp3 player internal memory 8 gb memory expansion microsd audio functions voice recording audio recording audio formats mp3 wma video formats amv picture formats jpeg bmp display size 18 inch display diagonal 254 cm display types lcd tft power supply li ion battery connections usb 20 headphone 35mm jack function radio organiser id3 tag e book reader colour black dimensions 80 x 40 x 9 mm weight 30 g