Up to 10 hours of surfing the web on Wi-Fi, watching video, or listening to music
Up to 9 hours of surfing the web using 3G data network
Charging via power adapter or USB to computer system
Input/Output:
Wi-Fi
30-pin dock connector port
3.5-mm stereo headphone minijack
Built-in speaker
Microphone
Wi-Fi + 3G
30-pin dock connector port
3.5-mm stereo headphone minijack
Built-in speaker
Micro-SIM card tray (Wi-Fi + 3G model)
Microphone
Sensors:
Accelerometer
Ambient light sensor
Gyroscope
Location
Wi-Fi
Wi-Fi
Digital compass
Wi-Fi + 3G
Wi-Fi
Digital compass
Assisted GPS
Cellular
Audio Playback
Frequency response: 20Hz to 20,000Hz
Audio formats supported: HE-AAC (V1 and V2), AAC (8 to 320 Kbps), Protected AAC (from iTunes Store), MP3 (8 to 320 Kbps), MP3 VBR, Audible (formats 2, 3, and 4, Audible Enhanced Audio, AAX, and AAX+), Apple Lossless, AIFF, and WAV
User-configurable maximum volume limit
Dolby Digital 5.1 surround sound pass-through with Apple Digital AV Adapter (sold separately)
TV and Video
AirPlay Mirroring to Apple TV support at 720p
Video mirroring and video out support: Up to 1080p with Apple Digital AV Adapter or Apple VGA Adapter (adapters sold separately)
Video out support at 576p and 480p with Apple Component AV Cable; 576i and 480i with Apple Composite AV Cable (cables sold separately)
Video formats supported: H.264 video up to 1080p, 30 frames per second, High Profile level 4.1 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
System Requirements
Apple ID (required for some features)
Internet access
Syncing with iTunes on a Mac or PC requires:
Mac: OS X v10.5.8 or later
PC: Windows 7; Windows Vista; or Windows XP Home or Professional with Service Pack 3 or later