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First IPod was release
Mechanical scroll wheel & 10 GB model -
Period: to
IPod Generation
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2nd Generation IPod Release
Touch-sensitive wheel -
3rd Generation IPod Release
First complete redesign with all-touch interface, dock connector, and slimmer case -
4th Generation IPod Release (Photo)
Adopted Click Wheel from iPod Mini, hold switch redesigned -
4th Generation IPod Release (Color)
Premium spin-off of 4th generation iPod With Color Screen, plus picture viewing. -
5th Generation IPod Release
Second full redesign with a slimmer case, and larger screen with video playback -
6th Generation IPod Release
the hardware and firmware was updated with a 120 GB
