Dual Ear Intercom Headset

<Headset Configuration> Dual-Ear </Headset Configuration> <Open or Enclosed Earphone> Enclosed </Open or Enclosed Earphone> <Earpads> Leatherette </Earpads> <Microphone Impedance> 2.2 kOhm +30% </Microphone Impedance> <Sensitivity> -51 dB, +3dB (0dB - 1V/Pa, 1 kHz) </Sensitivity> <Speaker Impedance> 40 Ohms +15% (1 kHz) </Speaker Impedance> <Max Power> 100 mW (2.0V RMS) </Max Power> <Frequency Range> 20 Hz - 20 kHz (-15dB/1kHz) </Frequency Range> <Output SPL> 106 dB = +2.0 dB </Output SPL> <Input> 1mW (0.2V RMS) </Input> <Weight> 6 oz (170 g) without cable; 8.1 oz (230 g) with cable </Weight>