Sanwa Supply Telephone Headset (Binaural Type) MM-HSRJ01

Ships from Japan [Impedance (headphones)]: 200Ω±20% [Maximum input]: 20mW [Format (microphone part)]: Condenser type [Directivity]: Unidirectional [Frequency band (microphone part)]: 100~8000Hz [Impedance (microphone part)]: 2.2KΩ [Input Sensitivity]: -40dB±3dB(0dB=1V/Pa, 1KHz), -60dB±4dB(0dB=1V/ubar) Please check the Sanwa Supply website for product support and details. [Input Sensitivity]: -40dB±3dB(0dB=1V/Pa, 1KHz), -60dB±4dB(0dB=1V/ubar) Please check the Sanwa Supply website for product support and details.