... RoHS 4. Attended 2011 Hongkong Electronics Show Model: BF001MLNew!! Support 8GB max TF cards electric torch music playerDimensionsDiameter 32MMx133.5mm Weight ... 6 hours,Headphone playback songs in 60 hours or more MP3,WMA,WMV,ASF Headset maximum output:(L)10mW+(R) ... Frequency response:20Hz---20KHzSNR(Signal Noise Ratio): 85DbSNR: 45dBMP1,MP2,MP3,WMA,WMV,ASF,WAV Operating temperature -5 To 40 degrees ...