Logitech Foldable Bluetooth v2.1 Wireless Headset

I love this headset. I have spent over 12 hours a day wearing it and it never gets uncomfortable even though I wear glasses. It does not block out external sound, which means I can listen to my game on the computer speakers and talk to my friends on Ventrilo or Teamspeak on the headset with no problems at all. The sound is perfectly good as far as I'm concerned, although I will admit to not being an audiophile and therefore perhaps not the best judge. I do know that the first time I put these on and was listening to my game on them, I was amazed at the environmental sounds I heard that I'd never heard before. I love these so much that this is the second set I've purchased, which leads me to the one con I've found. The mini-usb port for connecting these to the charger (laptop or any other usb charger) seems a little fragile, more so than any other mini-usb connector I've used (dozens). The connector on the first headset finally got to the point where it only charged if the cord was angled a bit - which wasn't too big a deal when I wasn't wearing them, but got problematic when I wanted to wear them and charge them at the same time. I'm trying to be more careful when plugging in the new set to avoid the issue in the future. The first set worked for about 2 years with no other issues, and as far as I can tell, there are no changes between the original set and this new one. These can be used while plugged in and charging, which was a huge part of the reason I bought these in the first place. Many other wireless headsets cannot be used while charging - dumb design if you ask me. The battery life from fully charged to depleted and making warning noises (annoying enough that I plug it in immediately) is somewhere around 4-5 hours. I use the little usb nano receiver instead of bluetooth, and I get great range if I wander away to the kitchen but want to keep listening/talking, at least as good as standard bluetooth (the specs say 12m, but I think I've gone further). The mute button on the right earpiece is very convenient and easy to get to and has a little raised bump so it is easy to find with your fingertips. I never have anyone complain about the sound quality of my voice, so I have to assume the microphone is a decent one. The only "issue" with the microphone is that while on Ventrilo, I have to set the sensitivity to a very small number (1-3) to trigger it on voice-activated. Once set properly, however, I've had no issues. Once very clever feature is that the little usb nano receiver has a handy storage place in the left earpiece, so that you won't lose it if you are using the headset on bluetooth instead of radio. Note that this is NOT a Logitech universal dongle, so if you have a Logitech wireless keyboard, mouse, or other device that uses their universal dongle, you will still need this one plugged in to use it in radio mode. I've never used the headset with a mobile phone, so I don't know how well they do or do not work with phones on bluetooth, but I don't imagine this is a good headset to use if you are in a noisy environment (other than your game, of course!), as it does not block out other noise at all. In summary, this is a great headset except for the charging connection, and that can be managed easily enough if you are careful when plugging it in. I'm very pleased with it and recommend it highly.