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- Video playback: Up to 10 hours
- Audio playback: Up to 40 hours
Mac system requirements
- Mac computer with USB 2.0 port
- Mac OS X v10.5.8 or later
- iTunes 9.2 or later (free download from&. . . . nbsp. . .
- iTunes Store account
- Internet access
Windows system requirements
- PC with USB 2.0 port
- Windows 7. Windows Vista. or Windows XP Home or Professional with Service Pack 3 or later
- iTunes 9.2 or later (free download from&. . . . nbsp. . .
- iTunes Store account
- Internet access
Environmental requirements
- Operating temperature: 32&. . . . deg. . . to 95&. . . . deg. . . F
(0&. . . . deg. . . to 35&. . . . deg. . . C)
- Nonoperating temperature: -4&. . . . deg. . . to 113&. . . . deg. . . F
(-20&. . . . deg. . . to 45&. . . . deg. . . C)
- Relative humidity: 5\\\% to 95\\\% noncondensing
- Maximum operating altitude: 10,000 feet (3000 m)
one 4 Technical Specifications
Size and weight
- Height:
- 4.5&. . . . nbsp. . . inches (115.2 mm)
- Width:
- 2.31&. . . . nbsp. . . inches (58.6 mm)
- Depth:
- 0.37&. . . . nbsp. . . inch (9.3 mm)
- Weight:
- 4.8&. . . . nbsp. . . ounces (137 grams)
Display
- Retina display
- 3.5-inch (diagonal) widescreen Multi-Touch display
- 960-by-640-pixel resolution at 326 ppi
- 800:1 contrast ratio (typical)
- Fingerprint-resistant oleophobic coating on front and back
- Support for display of multiple languages and cha racters simultaneously
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