Here I Will compare the iTouch 4g and 5g: iPod 4: 101g, 3.5 inch display, 640x960 pixels, 0.7MP rear camera, 0.3MP front, Apple A4 single core, 256mb ram, 930mah battery. iPod 5g: 88g, 4 inch display, 640x1136 pixels, 5MP rear camera with LED flash, 1.2 MP front camera, Apple A5 dual core, 512mb ram,1030mah battery. also iPod 5g uses apples lighting connector,