Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A great headset...

First, let me get the 2 minor negatives out of the way.1. There's no "beep" when a call drops or if your hung up on by mistake (Hello? Are you still there?).2. The "Power/Mute" is tough to use, but pushing/pulling the button to the left from it's right side as I push down made using it easier. These 2 things are why the Voyager 510 receives 4 stars instead of 5.I'll just ramble on about what I like. Clear and crisp sound, the cushion in your ear doesn't leave you listening to your environment in mono, the wind doesn't interfere with the mic or bluetooth signal from the phone as much as my other 2 headsets, the mic picks up my voice commands with little repetition and this unit just made an appearance in this weeks "The Simpsons" where Bart gets ahold of Dennis Leary's cell phone....it was being worn by the bully Dolph.