You get 128GB of on board storage for your music on this Sony Walkman NWZ-ZX1 digital player. The 4 inch VGA screen has a resolution of 854 x 480 pixel. The ZX1 runs on Android 4.1 Jelly Bean and it offers a battery life of up to 16 hours. Its dimensions are 6.09 cm width, 12.19 cm height, 1.27 cm depth and weighs 141.75 grams.