The iPod is the market leader in portable music players with over 220 million units sold to date. This very popular digital music player was introduced to the market place on 23rd October 2001 and since then has gone from strength to strength.
It has evolved to include various models, each designed to target the wants of different users. An example of this would be the Apple partnership with Nike to produce the Nike + ipod Sports Kit which enables runners to synchronize an monitor their runs with iTunes.
One of the most popular models is the iPod Touch, first introduced in September 2007. The 64 GB 3rd Generation Model features a faster processor along with voice control plus and external microphone.