Pm-660 Desktop MicrophoneMicrophone Paging Desktop • Desktop Type Dynamic Microphone With Cardioid Polar Pattern. • Short-Off Press To Talk Switch With Locking Lever. • Low Handling Noise. • 600 Ω Unbalanced Output Impedance. • 2.5M Single-Core Shielded Cable With 1/4 Inch Jack Plug. FeaturesTypeMicrophone Frequency Response100 - 10 KhzSensitivity -58 DbWeight440 GDimensions W X D X H100 X 215 X 150 MmDesktopYes Warranty1 Year