Description
HeadsetSpeaker Unit: 40mmFrequency Response: 20 Hz - 20 KHzSensitivity: 100 dBImpedance: 32 ohmMicrophoneFrequency Response: 100 Hz-10 KHzSensitivity : - 42 dBCablesCable Length: 200 cmPort: USB PlugSystem RequirementWindows 7 / 8/8.1 /10/11Mac OS X
best for call center
have 4 pieces