The Jabra PRO 935 DC MS is a professional entry-level wireless headset designed for use with desk phones and PC-based telephony such as Skype. The Jabra PRO 935 DC MS offers an attractive crystal clear audio and quality enhancing features. The noise-canceling microphone eliminates unwanted background noise.The Jabra PRO 935 DC MS is compatible with all leading desk phone systems. User-friendly voice prompts make set-up a breeze, and the simple and intuitive call-control buttons make it easy to manage calls while away from your desk. It is optimised for microsoft lync™Jabra PRO 935 DC MS Features:Wireless Bluetooth HeadsetOptimized for Microsoft Office Communicator 2010Noise-Canceling MicrophoneUp to 12 Hours Talk TimeUp To 300' RangeBluetooth 4.0Over the Head HeadsetFlex Type Boom ArmFor PC Softphones & Mobile PhonesStandby Time Upto 168 HoursCharge Time Upto 180 HoursAuto PairingJabra PC suiteBattery Status IndicatorNear Field Communications PairingMusic StreamingWideband Frequency ResponseMute FunctionFully Adjustable HeadbandLeatherette S Ear Cushions