Capacity
2/4/8GB USB flash drive(1)
Holds 500+ songs in 128-Kbps AAC format(2)
Stores data via USB flash drive
Audio
Skip-free playback
Frequency response: 20Hz to 20,000Hz
MP3 (8 to 320 Kbps), MP3 VBR, AAC (8 to 320 Kbps), Protected AAC (from iTunes Music Store, M4A, M4B, M4P), Audible (formats 2, 3 and 4) and WAV
Upgradable firmware enables support for future audio formats
Headphones
Earbud-style headphones with 18-mm drivers using Neodymium transducer magnets
Frequency response: 20Hz to 20,000Hz
Impedance: 32 ohms
Mac system requirements
Macintosh computer with USB port(5)
Mac OS X v10.2.8 or Mac OS X 10.3.4 and later (Mac OS X 10.3.6 or later recommended for use with low-power USB ports)
Windows system requirements
PC with USB port(5)
Windows 2000 with Service Pack 4 or later or Windows XP Home or Professional with Service Pack 2 or later
Environmental requirements
Operating temperature: 32?to 95?F (0?to 35?C)
Non operating temperature: -4?to 113?F (-20?to 45?C)
Relative humidity: 5% to 95% noncondensing
Maximum operating altitude: 10,000 feet (3000 m)
Input and output
USB connector
3.5-mm stereo headphone minijack
Power and battery(3)
Built-in rechargeable lithium ion battery
Playtime: Up to 12 hours when fully charged
Standby time: 1 month when fully charged
Charging via USB to computer system or power adapter
Full-charge time: about 4 hours
Size and weight
Height: 3.3 in.
Width: .98 in.
Depth: 0.33 in.
Weight: 0.78 oz (22 g)
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