We offering exclusive professional headset designed for those who appreciate quality, attractive look, style and comfort. The combination of highest quality materials and high-tech solutions gives the headset which will perform excellently in office environment as well as call centers. designed with exceptional attention to every single detail. Hd voice quality speakers, excellent noise cancellation, flexible microphone boom and compatibility with ip telephony are only some of its advantages. Structure coated in special material makes using this headset a pleasant experience. technical data: microphone sensitivity: -47 3db (0db = ivpa, 1khz)sound transmission: 630 20000 hzdynamics: 118b 3db at 1000hzimpedance: 150 15% high temperature resistance: +50c 2clow temperature resistance: -20c 2cacoustic protection level: 105 dbweight: 68g3-year warranty.