#.Size and weight
#.Height: 4.5 inches (115 mm)
#.Width: 2.4 inches (61 mm)
#.Depth: 0.46 inch (11.6 mm)
#.Weight: 4.8 ounces (135 grams)
#.Capacity
8GB & 4GB flash drive
#.Display
3.5-inch (diagonal) widescreen multi-touch display
480-by-320-pixel resolution at 160 dpi
#.Support for display of multiple languages and characters simultaneously
#.Operating system
OS X
GSM
Quad-band (850, 900, 1800, 1900 MHz)
#.Wireless data
Wi-Fi (802.11b/g)
EDGE
Bluetooth 2.0+EDR
#.Camera
2.0 megapixels
#.Audio
Frequency response: 20Hz to 20,000Hz
Audio formats supported: AAC, Protected AAC, MP3, MP3 VBR, Audible (formats 1, 2, and 3), Apple Lossless, AIFF, and WAV
#.Video
Video formats supported: 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 768 Kbps, 320 by 240 pixels, 30 frames per second, Baseline Profile up to Level 1.3 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
#.Headphones
Stereo earphones with built-in microphone
#.Frequency response: 20Hz to 20,000Hz
Impedance: 32 ohms
#.Mac system requirements
Mac computer with USB 2.0 port
Mac OS X v10.4.10 or later
iTunes 7.3 or later
#.Windows system requirements
PC with USB 2.0 port
Windows Vista Home Premium, Business, Enterprise, or Ultimate Edition; or Windows XP Home or Professional with Service Pack 2 or later
iTunes 7.3 or later
#.Environmental requirements
Operating temperature: 32° to 95° F (0° to 35° C)
Nonoperating temperature: -4° to 113° F (-20° to 45° C)
Relative humidity: 5% to 95% noncondensing
#.Maximum operating altitude: 10,000 feet (3000 m)
#.Input and output
iPhone
30-pin dock connector
3.5-mm stereo headphone minijack
iPhone Dock
Dock connector

Power and battery
Built-in rechargeable lithium ion battery
Talk time: Up to 8 hours2
Standby time: Up to 250 hours3
Internet use: Up to 6 hours4
Video playback: Up to 7 hours5
Audio playback: Up to 24 hours6