The bad: The Nano's camera can't shoot photos or HD-quality video and Apple located its lens in the most awkward location imaginable. Storage capacities remain stuck at 8GB and 16GB.
The bottom line: No other MP3 player on the planet packs more features, from video to a pedometer, into a smaller package than the overachieving Apple iPod Nano.
Specifications: Device type: Digital player / radio ; Flash memory installed: 8 GB ; Digital player supported digital audio standards: AAC , MP3 , WAV , AIFF , Audible , Apple Lossless
information about it from Cnet.com
Specification:
8GB flash memory integrated
Supported digital audio standarts (mp3, aac, wav, aiff, audible, and apple losless)
response bandwitch 20-20000Hz
support bit rate 8-320
additional features:
MPEG-4 playback , JPEG photo playback , PC Connection via USB , Variable bit-rate compatible