Mp4 player portable mp3 player series apple ipod touch internal memory 16 gb data transfer wlan storage media flash memory audio functions equalizer repeat function shuffle voice recording audio recording volume limiting audio formats mp3 aac protected aac audible apple lossless aiff wav he aac mp3 vbr video formats mp4 h264 mjpeg picture formats jpeg gif png bmp tiff psd display size 4 inch display diagonal 1016 cm display resolution 1136