LOGITECH H820E Wireless HEADSET Mono

Up to 300-foot range
Up to 10 hours of talk time
All-day comfort SYSTEM REQUIREMENTS: Windows Vista® or higher, macOS 10.7 or higher, Linux®, One USB 2.0 port Microphone (Tx)
Type: Bi-directional ECM
Frequency response: 100 Hz - 7 KHZ
Sensitivity: -45 dB +/- 3 dB
Distortion: <10% @ 1kHz, 10dBPa (MRP) input
Operating voltage: 1.4 - 5.0V DC
Speakers (Rx)
Frequency response: 150 Hz - 7kHz (ITU-T TIA920)
Sensitivity: 103dB ±3 dB at 1KHz, Input 1mW/ Type 4153 artificial ear
Distortion: < 4% @ 1kHz, 0dBm0, 1kHz Battery Type: Lithium ion
Weight: 9 g
Capacity: 430mAh