Researchers from the University of California, Berkeley created the first ever pair of graphene based earphones. The single sheet of graphene, with no special tweaks or tuning provided a frequency response comparable to a pair of commercial Sennheiser earphones. That's how good they've got things going.

The earphones measures 7 millimeters across but is just 30 nanometers thick. It's super thin and light (which means you'll indefinitely lose it). A single gram of graphene could cover an entire football field. The thin sheet was sandwiched between two silicon dioxide electrodes so that it could produce some sound.

But while you might lose it, you might not be able to wreck it. Simply because, it's incredibly strong. About a hundred times stronger than steel.

We can only imagine how expensive this might end up costing.

[arXiv via Extreme Tech]