2013 Computer Headphone Multi-function headphone Supports TF card playing,MP3 line-in,FM,Mic CE FCC RoHS are compliant Product Specifications Audio ModeMP3, WMAFM Frequency Range76MHz~108MHzDevice Imdepance320 hms +/-10%Digital frequency24-BitS/N Ratio> 85dBT.H.D.< 1%Audio Frequency Response20Hz~20kHzFM receiver sensitivity86dB/uVOutput Power (peak)20mWPower consumption (peak)40mAChannel ...