I purchased this unit 1 year ago and have plenty of experience with it. Initially when I opened the box it was very impressive. 4 ear loops 4 snap on ear pieces looked like it was made out of metal. Claimed outstanding noise reduction and great battery life + a fancy looking charger. Once I began using it I found that after 2 days the ear loop spring gets loose and the ear piece starts swinging wildly on your ear. In another week the snap-on ear piece fell off and got lost, ok so I have 3 more, now I know why, but they are all different size. After a year the ear loop broke, ok I have 3 more, but they are all different size and different ear. The charger pulled the back off the unit after about 6 month and I was just being real careful with it since then making sure the guts don't fall out. But wait, at least I have great noise reduction technology, which basically sounds like a metallic squeaky voice - ditto that. Only good news is that it sounds pretty good as a basic headset thought a little quiet.. Final opinion a big waste of $120 + tax.