 The Zune 30, the original Zune music player, has a 30 GB hard drive, 3 inch screen, and a simple directional pad for menu navigation.The second generation of Zune devices includes the Zune 4, 8, 80 and 120.The Zune 4, and 8 are smaller in size and have 4 GB, and 8 GB of flash memory, respectively.