This is actually the second Plantronics Voyager 510 I purchased from Amazon. The first one was awesome. It was so good, in fact, that it ran through the washing machine and upon charging still worked great. Clarity in voice and reception were great. The second one; however, was not so good. I only purchased it because I lost the first one. I had read reviews from others who did not have such good luck with their second purchase of this item when the first was awesome. And yet, I gave it a shot anyway, becasue the first one was so awesome and durable enough to be washed and dried. But the second one is hard to hear and people on the other end complain that it sounds like I'm talking in a trash can and get a lot of background noise. With the first, there was virtually no background noise. I don't know what Plantronics did between the manufacturing batches but they need to undo it if they expect to maintain their reputation. After this second purchase, I wouldn't recommend this item to anyone.

Besides all of the excellent performance features everyone else has mentioned like great sound in both directions, and comfort, this gets 5 stars from me for ruggedness. Being the goofball that I am, I put my cargo pants in the wash with the PL 510 in the pocket. Full laundry cycle and 50 min in the dryer, and I was hopping mad when I realized it. But because I am cheap and really didn't want to pay for another one, I put it on the charger, and boom! back in business. I can't remember the last time I was this impressed with the craftsmanship of an item.

Love it, love it, love it. It works great. Nothing else needed to say.

I bought this for my son to use with PS3. I was wondering whether it would fit him, he's on the small side but the interchangeable pieces work great for a customer fit and the whole piece fits on his small ear perfectly. It fits me too. PS3 had no trouble connecting. The thing last all day long on a charge and will charge quickly. The specs say it will work up to 33 feet away from the PS3 and we have no trouble using it in the entire first floor meaning you can get up from the PS3 room and walk into the kitchen and living room and still have a good connection. It also works with the Verizon LG Chocolate cell phone very well.

Let me cut to the chase.
1. Others may say that this piece does not fit into the pocket. I beg to differ. It swivels at two points and fits a 2D plane. It comfortably fits into my shirt pocket without bulging my pocket.
2. Remember this is a blue tooth device. Yet, I experience good clarity and reception up to 20 feet away from my BlackBerry.
3. I read in one of the reviews that rated the talk time between recharge to be low. I'm almost always on calls. I have been recharging my headset once in 4 days. My average talk time per day is around 2 to 3 hours on the headset.
The only thing that could've been better is the on/off switch. It is tiny and slightly hard to press when you wear it. I give a "thumbs up" to this product.