Logitech Headset H650E

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 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 Compliant to EN60950-1 Warranty assured and delivery done countrywide