An iPod is a palm-sized, electronic device primarily created to play music. Unlike a traditional Walkman or portable CD-player, the iPod is capable of storing a large number of tracks and playing for many, many hours on a single battery charge.
The iPod owes much of its success not in what it does, but in how it does it. Apple, the creator of the iPod, seems to have found the perfect combination of simplicity and functionality. Plus, a clever marketing campaign and Apple's ongoing efforts to remain relevant, resulted in the iPod striking a chord with the right demographic in a way that no other portable music player has in recent times.