Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, Wireless, Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black)

Mobile Unified Communications: For professionals using Skype for Business who require a consistently excellent hands-free communication solution

Dual Connectivity: Seamlessly switch between two connected Bluetooth devices for maximum call handling flexibility

Worry-Free Communication: Up to 30 hours of battery time (Includes 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