Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Significant Backround Noise, Poor Range, Slow Mute Process

I'm on the phone several hours a day while sitting in front of my computer. I've had previous Plantronics headsets that I was happy with. I can't walk very far from my desk (30 feet or so) before it starts beeping in my ear. Muting is an awkward and slow 3-second process that involves holding down the volume control key. Why not just had a simple one-function mute key?The most significant problem is that it picks up a lot of background noise and callers tell me they can hear my keyboard as if its right in front of them.I've been pretty disappointed with this one.