Apple iPod 2nd Generation

Apple iPod 2nd Generation
Introduced on July 17, 2002, at Macworld in 10 GB and 20 GB capacities, the second generation iPod replaced the mechanical scroll wheel of the original with a touch-sensitive, nonmechanical one (manufactured by Synaptics), termed a “touch wheel”. Due to the new Toshiba hard drives, the 20 GB iPod slightly exceeded its first generation counterpart in thickness and weight, while the 10 GB model was slimmer. The second generation iPod came with carrying cases and wired remotes and it was the first generation that was compatible with Windows.

Source:WikiPedia