Fourth Generation iPod Nano - The Fourth Generation iPod nano is clearly different from its predecessors both because its taller than its immediate predecessor and because this model is slightly rounded on the front.
The Fourth Generation iPod nano sports a 2-inch diagonal screen. This screen, however, is taller than it is long, unlike the third-generation model, which was squat and nearly square.
The fourth generation iPod nano adds three new features that previous models didn't have: a screen that can be viewed in both portrait and landscape mode, integrated Genius functionality and the ability to shake the iPod to shuffle songs. The shake-to-shuffle feature is thanks to a built-in accelerometer similar to the one used in the iPhone to provide feedback based on a user's physical manipulation of the device.
It also adds support for recording voice memos using an external mic or Apple's new in-ear headphones, which have a mic attached to them. It also offers the option to have some menu items spoken through the headphones.
Capacity
8 GB (About 2,000 songs)
16 GB (About 4,000 songs)
solid-state Flash memory
Screen
320 x 240
2 inches
65,000 colors
Supported Formats
Audio
- AAC
- AIFF
- Apple Lossless
- Audible
- MP3
- WAV
Images
- Bitmap
- GIF
- JPEG
- PNG
- PSD (Mac only)
- TIFF
Video
- H.264
- MPEG-4
Colors
Black
Silver
Purple
Blue
Green
Yellow
Orange
Red
Pink
Battery Life
Audio - 24 hours
Video - 4 hours
Connectors
Dock connector
Dimensions
3.6 x 1.5 x 0.24 inches
Weight
1.3 ounces.
Requirements
Mac: Mac OS X 10.4.11 or higher; iTunes 8 or higher
Windows:Windows Vista or XP or higher; iTunes 8 or higher
Price
US$149 - 8 GB
$199 - 16 GB
Availability
Released: Sept. 2008
Discontinued: Sept. 2009


