The fifth-generation iPod boasts many improvements over its predecessor, the 20GB iPod. For one, both the 30GB and 60GB boast more battery life – 16 and 20 hours, respectively, so users can enjoy their digital files longer. There’s also a bigger display, an improved signature Apple click wheel, a world clock and stop watch, and of course, like any iPod product, it is integrated for use with iTunes, the world’s biggest music catalog.Good things really do come in small packages.