CARACTERISTICI GENERALE   Tip Externe Binaural Over-the-head Cu fir Da Tehnologie Cu fir Microfon Da Frecventa de raspuns 200 Hz to 6.8 kHz Sunet Stereo Interfata Quick-Disconnect Sensibilitate 118 dB Impedanta 32 Ohm Diametru Difuzor 28 mm Caracteristici speciale Telecomanda pe fir: Call answer/ignore/end/hold, redial, mute, volume +/- Compatibilitate PC Windows® or Mac OS Culoare Negru Altele Telecomanda pe fir: Call answer/end button,volume, mute Tone alerts for mute on/off and volume maximum/minimum Plantronics Hub desktop version only, available for Windows/Mac. Plantronics Manager Pro suites: Asset Managementand Adoption, Call Quality and Analytics, Health and Safety   MICROFON Altele Noise-canceling