This headset worked perfectly for me for about 3 weeks (I used the headset about 1-2 hours a day for conference calls). The quality was great, noise around me was minimized and they were comfortable to wear. Last week, however, the left side started going out so now the quality is spotty (if both sides are working), or I can only hear on one side. Such a shame because the headset really was helpful for my calls.UPDATE: I was in desperate need of a headset during a call, so I used the headset again (expecting only one side to work- again desperate). Surprisingly, they are working just fine again. I've used for about four weeks with no issues.When updating this review, I did realize support reached out to me (I must have overlooked the email), but I didn't have to replace. Thank you.