wireless mini microphone 1.microphone hand free,USB jack 2.ISO,CE ... 3.lightweight:30g 4.laser,page up/down bluetooth wireless mini microphoneFeature:bluetooth wireless microphone 1.microphone hand free,USB jack2.ISO 9001 ... :20003.sensitivity:86db4.property:2.4G MIC5.wireless 2.4G microphone6.2.4g wireless microphoneFunction:1.It has more than 1000 ...