Great quality from LG. Good Bluetooth and it fits well on the neck. Sound was ok at first then I figured out that the further you push the earbuds into the ears the deeper the bass gets and the sounds is really good. Battery is lasting a long time also.
CONS - The microphone is garbage. I've owned 6 LG Bluetooth headsets, and this is the worst for the caller on the other end. I believe it has something to do with the sweatproofing.
PROS - Nice fit, good quality sound, great for exercise. If you're careful, the retractible earbuds are nice.
LG got it right. They put out an excellent headset in the HBS A80. I have the HBS 850's as well. The A80 is more comfortable around the neck for jogging or work. I love the sound that they deliver.