Product Features and Technical Details Product Features 1 GB model holds up to 240 songs; supports MP3, MP3 VBR, AAC, Protected AAC (from iTunes Music Store, M4A, M4B, M4P), and WAV Up to 12 hours of battery life, with approximately 4 hour charge time USB 1.1 and 2.0 compatibility through integrated USB connector Compatible with Mac OS X v10.2.8 or later (Mac OS X 10.3.4 or later recommended for use with low-power USB ports) and Windows 2000 with SP 4 or Windows XP Home or Professional with SP 2 Earbud headphones, lanyard, and USB cap included Technical Details Storage: 1 GB Battery life: Up to 12 hours Skip protection: Skip-free playback iPod Ports: USB connector, stereo minijack Dock Ports: iPod shuffle Dock-compatible USB connector Connectivity: USB 1.1 and 2.0 through integrated USB connector Charge time: About 4 hours (2-hour fast charge to 80 percent capacity) Audio support: 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 Dimensions: 3.3 inches by 0.98 inches by 0.33 inches Weight: 0.78 ounces Included software: iTunes for Mac and Windows Included accessories: Earbud headphones, lanyard, USB cap Documentation: Electronic documentation and getting started guide Limited warranty and service: Single incident telephone support for the first 90 days and a one-year limited warranty. Frequency response: 20 Hz to 20,000 Hz Mac system requirements: Macintosh computer with USB port , Mac OS X v10.2.8 or later (Mac OS X 10.3.4 or later recommended for use with low-power USB ports) Windows system requirements: PC with USB port , Windows 2000 with Service Pack 4 or Windows XP Home or Professional with Service Pack 2 Input and output: USB connector , 3.5-mm stereo headphone minijack