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- Sennheiser ActiveGard technology protects users against acoustic injury caused by sudden sound burst on the line.
- Wideband sound for a natural listening experience while a noise-cancelling microphone filters out ambient noise for optimum speech clarity
- For long-lasting user comfort, CIRCLE headsets feature CircleFlex dual-hinge ear cups with acoustic foam ear pads with soft leatherette cover.
- A fully adjustable, bendable boom arm positions the microphone perfectly. The pivotable boom rotates 350 degrees for wearing on either the right or left.