The Osp Cm255 Professional Pulpit Microphone Is The Perfect Choice To Capture Speech And Vocals In Environments Where Quality, Value And Budget Are Primary Considerations. Use In Churches, Schools, Auditoriums Lecture Halls, Etc. The Gooseneck Condenser Microphones Feature A Cardioid Polar Pattern, And Are Available In 12" Or 18" Lengths. Pulpit Mount And Screws Are Included As Well As A Matching Windscreen. Type: Back Electret Condenser Polar Pattern: Uni-Directional Frequency Response: 50Hz - 16Khz Sensitivity: -45Db +/-3Db(0Db=1V/Pa At 1Khz) Output Imp: 200 Ohms +/- 30%