Replacing the “squat” design of the Generation 3, the iPod nano Generation 4 returned to a “skinny” design similar to its predecessors. The new wraparound curved aluminum and glass case was offered in an unprecedented nine colors: silver, black, purple, blue, green, yellow, orange, pink, and (PRODUCT) RED Special Edition. The display was a wide-format 2-inch (diagonal) color LCD display at 320×240.
The iPod nano Generation 4 used either 8 GB or 16 GB of flash memory, capable of storing 2000 or 4000 songs, 7000 or 14,000 photos, and 8 hours or 16 hours of video. All colors were offered for both capacities.
The iPod nano Generation 4 features included an accelerometer (automatically switched to “Cover Flow” navigation in landscape orientation), games and videos only played in landscape, a new Genius feature to dynamically create playlists, and shake-to-shuffle for songs. Accessibility options were added including larger text and spoken menu items. It also included Nike+iPod support, FM radio tagging (using the Apple Radio Remote), support for audio crossfade, and games including Maze, Klondike, and Vortex.
The iPod classic Generation 6 continued the “classic” iPod design and used a 4200 RPM ATA-66 hard drive long after all other iPod models had switched to flash memory. The advantage to the spinning hard drive was that it could hold far more songs for a lower price.
The iPod classic Generation 6 offered a 80 GB or 160 GB hard rive capable of supporting 20,000 or 40,000 songs and 100 or 200 hours of video.
The iPod classic models use a 2.5-inch color LCD display with an LED backlight at 320×240 and use cases with either a silver or black anodized aluminum front and a chrome stainless steel back (previous models used white or black polycarbonate fronts). The iPod classic models were the first full-size iPod models to not be offered in white.
The larger case also allowed for long battery life: 30 hours of music and 5 hours of video for the 80 GB model and 40 hours of music and 7 hours of video for the 160 GB model.
The software included a CoverFlow option for selecting albums, and three games were bundled: iQuiz, Klondike, and Vortex.
The iPod nano Generation 3 used a design unique to the iPod family with “squat” proportions in a thin case. It was available in 4 GB or 8 GB versions, with the 4 GB model offered only in silver, and the 8 GB models offered in silver, light blue, light green, black, and (PRODUCT) RED Special Edition, and later pink option was added. All models had a chrome stainless steel back.
Compared to the iPod nano Generation 2, the Generation 3 added a larger 2-inch (diagonal) color LCD display at 320×240 resolution, support for video on the internal display, and video out via the dock.
The software is greatly improved with enhancements including a Cover Flow option for selecting albums. Three games were also bundled: iQuiz, Klondike, and Vortex.