The Voyager 510 is not most people's first choice. This bluetooth headset is big and ugly. Most people look for something prettier or more manly. Let's face it, the only people that buy this headset as their first headset are the ones that read through all the amazon reviews.I admit it. I bought other headsets first and took them all back. I got frustrated and read through all the reviews on amazon from people saying the same thing. They all bought this thing as their 3rd or 4th headset because of how it looked. So I took the plunge and bought this ugly thing.I was concerned about getting a headset that I could wear and still hear other people talking to me. This headset allows you to do just that because it leaves room for sound. I was also concerned about the headset falling off and being loose like the others. This headset comes with 3 sizes of inserts that fit at the base of the canal, not shoved into the canal. I chose the small insert and it fit perfectly. I can shake my head side to side as hard as possible and this thing will NOT fall out. Great for law enforcement or other physical jobs.This thing has a wide range of volume. So you can crank this thing to ear drum busting level if you want.The price is right. People can hear me good. I can hear them good. It's not as good as the one everyone talks about that sits on your chin and transfers vibration into sound. But that headset only works on about 50% of the people. If it doesnt touch your chin, it doesnt work! So unless that one works for you, choose the this plantronics voyager 510 instead because it is, in my opinion, the best non-vibration style headset there is, for those of us that dont want to waste $100 on a headset that only works if it touches your chin just right. My 2 cents.