Not sure how long these will last, but this is a great deal if you have been wanting a set of these. These headphones are very similar to the Sennheiser PX100 but they are closed back instead of open air. I have a pair of the px100 and was waiting for a deal on the PX200 for occasions where the greater sound isolation would be more desirable. This price is hard to beat. Here is the link. http://www.ecost.com/detail.aspx?edp=3108337&source=k8433 Warmest regards, Rick Alfaro rick.alfaro@xxxxxxxxxxx