Plantronics DuoPro® Over-the-Ear Headset DuoPro® Over-the-Ear Headset • Compact, lightweight headsets with superior acoustics and sound reception • Reduces background noise and incoming loud tones while enhancing call clarity • Quick Disconnect™ lets you leave your desk while the caller remains on the line • All models available with voice tube or noise canceling microphone Best-in-class performance. Advanced speaker technology for optimal clarity. Speaker pad balances off the ear for clear sound without pressure. Adjustable double T-pad headband, earloop and clothing clip provide all-day comfort. Requires either PLN-P10, PLN-M12 or PLN-CA10 amplifier (all sold separately). Manufacturer’s two-year warranty. Clear Voice Tube