Pm-660D Desktop MicrophoneMicrophone Paging Desktop • Desktop Type Dynamic Microphone With Cardioid Polar Pattern. • Short-Off Press To Talk Switch With Open Off Type Extra Switch Contact. • Low Handling Noise. • 600 Ω Balanced Output Impedance. • 2.5M 4-Conductor (Included Twin-Core Shielded) Cable With 5 Pin Din Plug. • Can Be Remotely Operated With Additional Components Such As Priority And Transmitting / Receiving Relays. FeaturesTypeMicrophone Frequency Response100 - 10 KhzSensitivity-58 DbWeight440 GDimensions W X D X H100 X 215 X 150 MmDesktopYes Warranty1 Year