Model
|
Visual
|
Description
|
| 1st Generation or "Scroll Wheel" |
 |
The wheel physically spins. |
| 2nd Generation or "Touch Wheel" |
 |
The wheel does not spin, but rather is touch-sensitive. |
| 3rd Generation or "Dock Connector" |
 |
Most readily identified by the four buttons along the top. This is called the "Dock Connector" iPod because it was the first to replace its FireWire connection port with a port for the dock connector on the bottom that has continued ever since. |
| 4th Generation or "Click Wheel" |
 |
This model has a single wheel, with all buttons on or inside of the while. The wheel is touch-sensitive, and does not spin. |
| 4th Generation Photo |
|
Physically indistinguishable from the original 4th generation click wheel, except that its display appears in color. |
| 5th Generation iPods ("Video") |
|
Looks like the 4th generation, but with a much larger display, and capable of playing videos. |
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