ESPECIFICACIONESCONNECTS TOPC VIA USBCOMPATIBLE WITHWINDOWS® OR MAC OSIDEAL FORUSERS TRANSITIONING TO PC TELEPHONY FOR WEBINARS, CONFERENCE CALLS, MUSIC, AND OTHER MULTIMEDIA APPLICATIONSPC AUDIO PERFORMANCEDYNAMIC EQ, MICROPHONE FREQUENCY RESPONSE 100 HZ10 KHZ OPTIMAL FOR PC WIDEBAND VOICE TELEPHONY (UP TO 6,800 HZ), HI-FI STEREO (C3220/ C3225). RECEIVE OUTPUT FROM 20 HZ20 KHZ, ENHANCED DIGITAL SIGNAL PROCESSING (DSP), NOISE-CANCELING MICROPHONE, ADJUSTABLE AUDIO ALERTS WITH PLANTRONICS HUB SOFTWARE (MUTE/VOLUME)*HEARING PROTECTIONSOUNDGUARD: ACOUSTIC LIMITING FOR PROTECTION AGAINST SOUNDS ABOVE 118 DBAREMOTE CALL CONTROLCALL ANSWER/IGNORE/END/HOLD, REDIAL, MUTE, VOLUME +/-
