Portable mp3 player series sony walkman internal memory 8 gb audio functions repeat function shuffle equalizer audio formats wma aac pcm mp3 display size 177 inch display diagonal 45 cm display resolution 128 x 160 pixels display types qvga tft display properties colour display battery life audio 35 h recharge time 2 h connections usb 20 headphone 35mm jack function radio colour blue weight 39 g