content: I purchased these on June 27th and, unfortunately I did not open the box and start using them until late July. Within 1/2 days, the left side went out, and just the right side works. When I went online to see about returning them, it was out of the time frame and according to the warranty(which I admit to not reading before purchasing), even if I was in the allotted time slot, would only be eligible for 50% of my money back. Sigh. Word to the wise, open electronics immediately!!!