960-by-640-pixel resolution at 326 pixels per inch
Audio
Frequency response: 20Hz to 20,000Hz
Audio formats supported: AAC (8 to 320 Kbps), Protected AAC (from iTunes
Store), HE-AAC, MP3 (8 to 320 Kbps), MP3 VBR, Audible (formats 2, 3, 4, Audible
Enhanced Audio, AAX, and AAX+), Apple Lossless, AIFF, and WAV
User-configurable maximum volume limit
TV and video
H.264 video up to 720p, 30 frames per second, Main Profile level 3.1 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,
Simple Profile with AAC-LC audio up to 160 Kbps per channel, 48kHz, stereo audio
in .m4v, .mp4, and .mov file formats
Motion JPEG (M-JPEG) up to 35 Mbps, 1280 by 720 pixels, 30 frames per
second, audio in ulaw, PCM stereo audio in .avi file format
Support for 1024 by 768 pixels with Dock Connector to VGA Adapter; 576p and
480p with Apple Component AV Cable; 576i and 480i with Apple Composite AV Cable
(cables sold separately)
Cameras, photos, and video
Video recording, HD (720p) up to 30 frames per second with audio; still
photos (960 x 720) with back camera
VGA-quality photos and video up to 30 frames per second with the front
camera
Tap to control exposure for video or stills
Photo and video geo tagging over Wi-Fi
Battery and power
Built-in rechargeable lithium-ion battery
Playback time
Music playback time: Up to 40 hours when fully charged
Video playback time: Up to 7 hours when fully charged
Charging
times: Fast charge in about 2 hours (80% capacity), full charge in about 4
hours.