lapel microphone: 1.Clip-on lapel microphone 2.Nice design,clear sounds,good bass 3.Fit for wireless microphone system lapel microphone JALM001 ,fit for wireless microphone system,portable amplifier,100% clear sounds. Specification Capsule TypeBack Electret Condenser Polar PatternUni-directional Capsule DiameterΦ4.0*2.5.0MMSensitivity48dBFrequency Response1k-20KHz Output Impedance680 ΩPower ...