Sony 4GB W Series MP3 Water Resistant Walkman - Black (NWZ-W273/BLACK )

Convenience Features

• Search Features : ZAPPIN®(Short or Long
  3 min Quick charge
  Automatic Volume Limiter System
  Playback options

Power

• Battery Charging (Approx) : USB-based:
  1.5 Hrs (full charge)
  3 Minutes (approx. 60 minutes playback)1
• Battery Indicator : LED Battery Life Indicator (Green/Orange/Red)
• Battery Life (Approx) : 
  MP3 @ 128 kbps = 8 Hrs.; 
  Linear PCM @ 1411 kbps = 7 Hrs.
• Power Type : Built-in Rechargeable Li-ion Battery

Audio

• Audio Power Output : 5 + 5mW
• Format(s) Supported : MP3 / WMA / AAC-LC / L-PCM
• Frequency Response : 20 to 20,000 Hz (when playing data file, single signal measurement)

Hardware

• Headphone Type : EX headphones with closed, dynamic 13.5mm dome driver
• Interface : Hi-Speed USB (USB 2.0 compliant)
• System Requirements : IBM PC/AT compatible computer preinstalled with the following Windows operating systems1: 
  Windows® XP Home Edition2 (Service Pack 3 or later
  Windows® XP Professional2 (Service Pack 3 or later)
  Windows Vista® Home Basic (Service Pack 2 or later)
  Windows Vista® Home Premium (Service Pack 2 or later)
  Windows Vista® Business (Service Pack 2 or later)
  Windows Vista® Ultimate (Service Pack 2 or later)
  Windows® 7 Starter (Service Pack 1 or later)
  Windows® 7 Home Basic (Service Pack 1 or later)
  Windows® 7 Home Premium (Service Pack 1 or later)
  Windows® 7 Professional (Service Pack 1 or later)
  Windows® 7 Ultimate (Service Pack 1 or later)
  Windows® 8
  Windows® 8 Pro
  Mac OS X v10.6 or later
  Not supported by OSs other than above.
  Compatibility mode for Windows XP (included with Windows Vista and Windows 7) is not supported. 
  1-Excluding OS Versions not supported by Microsoft.
  2 - Excluding 64-bit OS versions. 
  CPU: 1 GHz processor (2.6 GHz recommended for video playback)
  RAM: 1 GB or more (2 GB RAM required for Windows 8 64-bit)
  Hard Disk Drive / Solid State Drive: 600 MB or more of available space
  Internet Explorer 7 or later
  Internet connection (for Gracenote® MusicID®service, podcast features, Store access, or online help). 
  We do not guarantee operation for all computers even if they meet the above System Requirements. 
  Not supported by the following environments
  Personally constructed computers or operating systems
  An environment that is an upgrade of the original manufacturer-installed operating system
  Multi-boot environment

Weights and Measurements

• Weight (Approx.) : 29g (1.1 oz)

Audio Features

• Play Mode : All Play / Shuffle / Playlist

Memory

• Memory Size : 4 GB
• User Memory Capacity (Approx.) : 3.54 GB (3,803,414,528 bytes)

• Adjustment band (1)

• Earbuds (Size S/M/L) Supplied in pairs.
• Quick Start Guide

• USB Cradle (1)
• Notes on Water Resistant Specifications