Display: 2.5-inch (diagonal) widescreen Multi-Touch display, 240-by-432-pixel resolution at 202 pixels per inch
Wireless Bluetooth 4.0
Nike+ support
Audio Playback
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
Video Format Support
H.264 video: 720 by 576 pixels, 30 frames per second; Baseline, Main, and High-Profile level 3.0 with AAC-LC audio up to 256 Kbps; 48kHz; stereo audio in .m4v, .mp4, and .mov file formats
MPEG-4 video: up to 2.5 Mbps, 720 by 576 pixels, 30 frames per second; Simple Profile with AAC-LC audio up to 256 Kbps; 48kHz; stereo audio in .m4v, .mp4, and .mov file formats
FM Radio
Regional settings for Americas, Asia, Australia, Europe, and Japan
Live Pause feature for pausing a radio broadcast and rewinding (within a 15-minute buffer)
Sensor: Accelerometer
Power and Battery
Built-in rechargeable lithium-ion battery
Music playback time: Up to 30 hours
Video playback time: Up to 3.5 hours
Charging via USB to computer system or power adapter (sold separately)
Fast-charge time: about 1.5 hours (charges up to 80% of battery capacity)
Full-charge time: about 3 hours
Languages
35 UI languages: Arabic, Brazilian Portuguese, British English, Cantonese (Traditional Chinese), Catalan, Croatian, Czech, Danish, Dutch, English, Finnish, French, German, Greek, Hebrew, Hungarian, Indonesian, Italian, Japanese, Korean, Malay, Norwegian, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Slovak, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese. For Arabic and Hebrew, some UI elements are not right to left
Fitness spoken feedback is available in seven languages: Chinese (Mandarin), English (U.S.), French (France), German, Italian, Japanese, Spanish (Spain)