Sennheiser MB 660 UC - Brand new

Sennheiser MB 660 UC (507092) - Dual-Connectivity, Wireless, Bluetooth, Foldable, Adaptive ANC Over-Ear Headset For Desk/Mobile Phone & Softphone/PC Connection UC Platform Compatibility (Black)

Features & details
Mobile Unified Communications: For professionals who require a consistently excellent hands-free communication solution for all UC platforms (Cisco, Avaya, IBM, etc.)
Dual Connectivity: Seamlessly switch between two connected Bluetooth devices for maximum call handling flexibility
Worry-Free Communication: Up to 30 hours of battery life; Come includes with an audio cable for flawless functionality without charge
Speak-Focus Technology: 3 digital microphones work in tandem to deliver crystal clear sound, regardless of background noise
Sound Effects Mode: Choose between a host of personalized sound effect modes (Club, Movie, Speech, Director) for sound that suits your medium
NoiseGard Technology: With Adaptive Active Noise Cancelling (ANC) built in, the MB 660 automatically adjusts your headphone's noise reduction for maximum productivity without isolation
Peace of Mind: With a 2-year warranty on all headsets (including batteries), you never have to worry about the quality of your bluetooth headset
Touch Pad Call & Media Controls: The on-headphone touchpad allows easy functionality with simple swipes and taps for call & media control
Advanced Own-Voice Detection: An own-voice detector isolates the sound of your voice among any and all background noise to allow for maximum speech intelligibility
Comes Equipped: All MB 660 models come with a USB PC dongle, USB cable + Micro USB connector, 2.5mm & 3.5mm headphone jacks, in-flight adaptor, and a carrying case