Logitech H650e Usb Stereo Headset

Type: Bi-directional ECM Frequency Response: 100 Hz – 10 KHz Sensitivity: Type: -45 dB +/- 3 dB Distortion: <10% @ 1 kHz, 15 dBPa (MRP) input Operating voltage: 1.4-5V DC Speakers (Rx) Frequency Response: 50Hz-10KHz (Diffuse field) Sensitivity: 90 dB ±3 dB at 1 KHz, Input 0.56V/10 mm free field Distortion: <4% @ 1 kHz, 0 dBm0, 1 kHz Driver size: 32 mm Compliant to EN 50332-2