Logitech H650e Professional USB Headset Stereo

Part NumberStereo : 981-000519Mono : 981-000514DimensionsHeadsetHeight: 165 mmWidth: 174 mmDepth: 50 mmWeight: 120 gCable length: 2.1 mPackagingHeight: 185 mmWidth: 203 mmDepth: 63 mmWeight: 175 gTechnical SpecificationsMicrophone (Tx)Type: Bi-directional ECMFrequency Response: 100 Hz – 10 KHzSensitivity: Type: -45 dB +/- 3 dBDistortion: <10% @ 1 kHz, 15 dBPa (MRP) inputOperating voltage: 1.