Plantronics – 77T43AA – Encore Monaural Ear-cup Noise Cancelling Headset – Black
Mono – Wired – 32 Ohm – 50 Hz – 8 kHz – On-ear – Monaural – Ear-cup – Noise Cancelling, Uni-directional Microphone – Noise Canceling. Flexible noise-canceling microphone boom. HP EncorePro 310 Headset.
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