Half a headset within 2 weeks.
Company I worked for purchased a lot of these for an upgrade. Immediately received with a multitude of complaints on volume level, comfort, and inability to block out sound. Within 2 weeks, one side of headset has already failed on my own personal headset. This headset is used roughly 8 hours a day, roughly 5 days a week. For a product to fail after so few hours is absolutely unacceptable. Also, the headset was placed in a drawer in a plastic bag in between each use, so improper care for the headset really is not on the board. I hope the rest of the products offered by your company are of a much higher quality and experience at least some Quality Testing before being shipped.