Mp4 player portable mp3 player series philips gogear internal memory 4 gb data transfer bluetooth audio formats mp3 wav wma ape flac video formats wmv9 picture formats jpeg bmp png display size 22 inch display diagonal 56 cm display resolution 320 x 240 pixels display type lcd display properties colour display battery life audio 35 h battery life video 6 h power supplies charge via usb rechargeable polymer lithium battery connections usb