Specification

     Mfr Part Number: M9724LL/A
     Capacity:
           512MB USB flash drive
           Holds 120 songs in 128-Kbps AAC format
           Stores data via USB flash drive
     Audio:
           Skip-free playback
           Frequency response: 20Hz to 20,000Hz
           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
           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
     Input and output:
           USB connector
           3.5-mm stereo headphone minijack
     Power and battery:
           Built-in rechargeable lithium ion battery
           Playtime: Upto 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
     Mac system requirements:
           Macintosh computer with USB port
           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
           Windows 2000 with Service Pack 4 or later / Windows XP Home or Professional with Service Pack 2 or later
     Included software: iTunes for Mac and Windows
     Included accessories: Earbud headphones, lanyard, USB cap
     Color: White
     Dimension (WxDxH): 0.98 x 0.33 x 3.3 inch
     Weight: 0.78 oz / 22 g