Holds up to 1,000 or 2,000 songs in 128-Kbps AAC format
Holds up to 3,500 or 7,000 iPod-viewable photos
Holds up to 4 hours (4GB) or up to 8 hours (8GB) of video
Stores data via USB flash drive
Display
2-inch (diagonal) liquid crystal display with blue-white LED backlight
320-by-240-pixel resolution at 204 pixels per inch
Headphones
Earphones
Frequency response: 20Hz to 20,000Hz
Impedance: 32 ohms
Audio
Skip-free playback
Frequency response: 20Hz to 20,000Hz
Audio formats supported: AAC (16 to 320 Kbps), Protected AAC (from iTunes Store), MP3 (16 to 320 Kbps), MP3 VBR, Audible (formats 2, 3, and 4), Apple Lossless, AIFF, and WAV
User-configurable maximum volume limit
Video
H.264 video, up to 1.5 Mbps, 640 by 480 pixels, 30 frames per second, Low-Complexity version of the H.264 Baseline Profile with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats; H.264 video, up to 2.5 Mbps, 640 by 480 pixels, 30 frames per second, Baseline Profile up to Level 3.0 with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats; MPEG-4 video, up to 2.5 Mbps, 640 by 480 pixels, 30 frames per second, Simple Profile with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats
Power and Battery
Built-in rechargeable lithium ion battery
Music playback time: Up to 24 hours when fully charged
Video playback time: Up to 5 hours when fully charged
Fast-charge time: about 1.5 hours (charges up to 80% of battery capacity)