Apple Computer today (July 19) is introducing a slightly slimmer version of the iPod that is $100 cheaper, features improved battery life and incorporates the navigation technology from the iPod Mini.

Apple Computer today (July 19) is introducing a slightly slimmer version of the iPod that is $100 cheaper, features improved battery life and incorporates the navigation technology from the iPod Mini.

In addition, Hewlett Packard says it will begin shipping its version of the iPod, which is based on this newest iPod update, starting in September.

The device's control buttons have been integrated into the scroll wheel -- a patent pending feature known as the Click Wheel -- allowing for improved use of the iPod with one hand.

The Click Wheel was first introduced with the iPod Mini. In the previous iteration of the white iPod, the control buttons were positioned above the scroll wheel.

The new iPod also features up to 12 hours of battery life -- a 50% improvement on previous battery life. Additionally, the main menu features a "Shuffle Songs" command, allowing for speeder shifting between ordered song playback and random track selection.

The new iPod -- which is 1 millimeter thinner than the last version of the player -- is available immediately in a 20GB model for $299 and a 40GB model for $399. Each model is $100 cheaper than its previous price point.