The iPod Nano is the newest digital audio player from Apple. It received an overwhelming welcome when it was released on September 7, 2005 and quickly sold out completely in many Apple Stores. The iPod Nano combines features from both iPod shuffle and the standard iPod, and replaces the iPod mini. (The iPod mini was discontinued as soon as iPod Nano had been released.)
Compared to the iPod shuffle, the iPod Nano is equipped with a considerably larger flash memory despite being much smaller physically. The first launch included two types of iPod Nano - the 2GB and the 4GB. The 4GB iPod Nano is capable of storing up to 1000 songs.
Since the iPod Nano is smaller than the full sized iPods, such as the iPod shuffle, the iPod Nano consequently comes with a smaller click wheel and screen. The screen is just 176 by 132 pixels and has a diagonal size of 1.5 inches. The screen is however coloured and capable of a much higher resolution than the common greyscale iPod screen. This has made it possible to fit one extra line of text in the screen of the iPod Nano compared to the screen of the equally small iPod mini.
http://www.videoipods.ws/iPod-Nano-Demand-is-Staggering.html
