Frequency response: 20Hz to 20,000Hz
Audio formats supported: AAC, Protected AAC, MP3, MP3 VBR, Audible (formats 2, 3, and 4), Apple Lossless, AIFF, and WAV
User-configurable maximum volume limit
Video playback
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 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
Camera, photos, and video
3 megapixels
Autofocus
Tap to focus
Video recording, VGA up to 30 fps with audio
Photo and video geotagging
iPhone and third-party application integration
External buttons and controls
Sleep/wake
Ring/silent
Volume up/down
Home
Connectors and input/output
30-pin dock connector
3.5-mm stereo headphone minijack
Built-in speaker
Microphone
SIM card tray
Sensors
Accelerometer
Proximity sensor
Ambient light sensor