I've been testing 8 headsets and to my surprize, this little thing has better sound quality than 7 of them! (The one exception I'll explain) First of all it's super light and fits so well that you'll forget it's in your ear. Really! It feels so snug that it doesn't feel like it might fall out, unlike many others. (Forget that optional ear loop thing. It made it worse.) Second, when it needs recharging there's no need for plugging and unplugging wires. Just set it in it's case and close the lid. Take it out when it's done. (The case stays plugged in. No messing with the wire.) Third and most important to me is the sound quality. I compared these 8 headsets: Plantronics Voyager 510, Plantronics Explorer 320, Jabra BT8040, Jabra BT500, Motorola HS850, Motorola H700, Jawbone, Samsung WEP200. I compared them head-to-head by pairing two at a time, putting one in each ear, and switching between them while on the same call. This lets me and the caller compare the sound quality for both of us. I do this in a few different environments with a few different background sounds. This puppy sounded clearer than all the others except one and specifically in one situation. Here's the exception: loud background noise. Now hear me out, I work in construction and background noise is a huge issue for me at work. I've never found any headset that handles background noise better than the Plantronics Voyager 510. Not the Jawbone or anything else. So for me the Samsung WEP200 won't work. Mostly because of the background noise, but also because it's cute red color would make me stand out like a bullseye at a firing range. But, it's not for me! It's for my mom and she loves it! (and she won't be doing construction anytime soon) So if you don't have a noisy environment then I give this an A+. Yes, it sounds hollow in a car. Yes, if the wind blows straight into it the caller can't hear you. But I haven't found one that doesn't do that, and this has clearer sound than all of them. (With my one exception) Oh, one more thing. It has 4 hours of talk time which is less than the others (they range from 6-12), so if you talk a lot, for the price you can buy two. Charge and pair them both and you'll have a spare.