Zebronics ZEB-11HMV/15HMV Stereo Headphone with Mic (Black) Product Description Zebronics Headphone is an over-the-ear type and over-the-head design. 				    	 					 From the Manufacturer  HeadphoneFrequency range20Hz-20KHzSensitivity100dBImpedance32ΩMax. Input Power100mW MicFrequency range30-15000HzSensitivity-38dB+/-5dBImpedance2.2kΩ