System Requirements Hardware IBM PC or compatible PC, Notebook or Macintosh with USB port Operation System Windows98/98SE/Me/2000/XP，Window vista and Linux2.4/Mac OS10.0 above Driver installation Only required for Windows98/SE Function characteristics USB Interface USB2.0 high speed Capacity 256M，512MB, 1GB, 2GB，4GB，8GB(Optional) Storage Device Removable Storage Device Card type N/A A-B Repeat Support Recording Microphone Recording， FM Recording（Only for EM645JB） EQ Mode Normal, Rock, Pop, Classical, Soft , Jazz, Bass，User EQ，SRS WOW Supported Language Simple Chinese ,Traditional Chinese, English etc Play Mode Normal, Repeat one, Folder，Repeat Folder，Repeat all, Random，Intro FM Radio Support VBR Support Technical Specification Read speed SLC: 5.0~6.0MB/S MLC：3.5~4.0MB/S Write speed SLC:4.0~5.0MB/S MLC: 1.5~2.0MB/S Audio format MP3，WMA Bit Rate MP3,WMA:8Kbps—320Kbps Recording Length ACT：1GB about 280 hours（8Kbps/8KHz） FM Frequency Range 87.5-108MHz/76-90MHz（Normal Band/Japan Band ）（Only for EM645JB） FM Scan Mode Manual/Automatic Search（Only for EM645JB） Number of Preset Channels 20（Only for EM645JB） Battery Life 6-8Hours LCD Display 128x64 SNR 90dB above Frequency Response Range 20HZ—20KHZ Record format MIC REC ：ACT （8Kbps/8KHz） FM REC：WAV(32Kbps/8KHz) Physical characteristics Battery Type Rechargeable Li-polymer battery Storage Temp* -20℃ ~ +55℃ Ambient Temp* -10℃ ~ +55℃ Operation Relative Humidity* 20% ～ 90%（40℃） Storage Relative Humidity* 20% ～ 93%（40℃） Size（mm） L*W*H :70.6x28x13（mm） Weight（g） About 18.8g Color Package Blister package, color box EMI Compliance CE