#1	Clear call quality perfect sound volume moderate and comfortable Broad band audio frequency makes more natural voice Hearing protection with active protection technology
#2	Enhanced noise canceling microphone filter background noise Mic boom 330 degree rotation offer optimal convenience HD voice audio quality perfect work with you all day
#3	Fit any head size with adjustable headband Super soft leather ear cushion and foam cushion bring comfortable and reliability Comes with quick connect make work more convenient
#4	Suitable for customer service call center office and other occasions provide definition stability and noise reduction performance ensuring smooth and clear communication
#5	Adapter cable included work with Avaya IP 1608 1616 9601 9608 9608G 9610 9611 9611G 9620 9620C 9620L 9621 9621G 9630 9630G 9640 9640G 9641 9641G 9650 9650C 9670 9670G J139 J159 J169 J179 J189 phones