• Size (WxHxD)51 mm x 84 mm x 19 mm• Capacity6GB• Power SourceBattery: 1 x Rechargeable Lithium Ion battery, USB bus powered when connected to a power outlet or powered USB port on a computer• Battery LifeMP3 128 kbps: Up to 12 hours of continuous playback with a full battery chargeWMA 64 kbps: Up to 12 hours of continuous playback with a full battery chargeFM radio: Up to 16 hours of continuous playtime with a full battery charge• Playback FormatsMP3: Up to 320 kbpsWMA: Up to 320 kbpsWMA with Digital Rights Management (DRM) 9WMA with Digital Rights Management (DRM) 10 - update available online• Recording FormatsVoice (via built-in microphone): IMA ADPCM (16 kHz, Mono)FM Radio: IMA ADPCM (22 kHz, Stereo)• FM RadioStereo and MonoUp to 32 preset stationsFM region support, International: 87.5 MHz ~ 108.0 MHz, 100 kHz Intervals• MP3 Playback PerformanceSignal-to-Noise Ratio: Up to 98 dBChannel Separation: Up to -70 dBFrequency Response: 20 Hz ~ 20 kHzHarmonic Distortion Output: <0.1%• ConnectorsHeadphone jack: 3.5 mm stereo minijack, 25mW per channelUSB 2.0 port: Standard USB mini-B receptacleUSB 2.0 (High speed)USB 1.1 (Full speed)• LCD160 x 104 pixel display with white LED backlight• Earphone SpecificationsFrequency Range: 20 Hz ~ 20 KHzSensitivity: 111 dB ±5 dB (I/P Level:1 mW)Impedance: 32 Ω ±15%Plug: 3.5 mm stereo minijack