The iPod Generation 4 shipped with a 20 or 40 GB hard drive and was the first full-size iPod to use the Click Wheel that was introduced with the iPod mini.
This example features a factory-etched Tivo logo. This etching option was offered by Apple for corporate gifts or promotions. In this case, I was a member of Tivo’s “Tivo Rewards” program that included a credit card that accrued points that could be redeemed for various rewards, including this etched iPod.
Source: EveryMac.com
