hyper cardioid wireless audio conference system

{"cid":"91223065","title":"CY019 10mm Cardioid Hyper-Cardioid Condenser Microphone Electret Capsule for DIY Audio 797","imgUrl":"https:\/\/img.chinax.com\/nimg\/fa\/eb\/bc787eb149b788dc6668889fd1f2-200x200-1.jpg","attrs":{"Price":"$30.00\/pieces 1-99 pieces","Brand Name":"797AUDIO","Model Number":"CY019","Place of Origin":"Beijing, China","Rated Voltage":"Not Applicable","Frequency":"20-20000Hz","Material":"Not Applicable","Output Type":"Not Applicable","Input Type":"DC","Termination":"Not Applicable","Operating Mode":"Not Applicable","Technology":"Not Applicable","Type":"CY019, Microphone","Sensitivity (dB@1kHz, 0dB=1V\/Pa)":"-44.5","Polar Pattern":"Cardioid,Hyper-Cardioid","Frequency Response (Hz)":"20-20000","Capacitance Response(Hz)":"11.0","Diaphragm":"3\u03bcm Mylar, Nickel-plated","Weight (g)":"3.2","Color":"Black","Mounting Type":"Custom","Voltage - Input (Max)":"Not Applicable","Capacitance @ Frequency":"Not Applicable","Efficiency - Type":"Not Applicable","Power - Max":"Not Applicable","Size \/ Dimension":"10.5,11.2,M9..9X0.4","Frequency Range":"20-20000","Port":"Beijing,Tianjin,Shanghai","Supply Ability":"160000 Piece\/Pieces per Month"}}