EP0066B Features Excellent stereo headset with super bass sound quality With omnidirectional microphone Great for enjoying music and talking via internet General Specs Brand Kanen Model KM-790 Sound Excellent super bass stereo sound Earphone Type Wired headset Impedance  32 ohms at 1kHz Sensitivity 103db Frequency Response 20-20000Hz Connector 3.5 mm audio jack Cable Length 2.1 m Microphone Frequency 75-16000 Hz Compatibility MP3 player， MP4 player， personal CD player， PC， laptop Others Ominidirectional microphone