Logitech H820e Headset Headphones

Windows vista or higher macos 10.7 or higher linux one usb 2.0 port application compatibility compatible with most leading uc platforms such as skype and skype for business, google hangouts pro, cisco, and more.1 technical specifications 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 package