Few of us (including me) have ever heard of Zirconia. A quick look at Google reveals that Panasonics claims about this material having less resonance than plastic or aluminum are true. This basically means that unlike other headphones that use such material, using Zirconia results in a purer , clear sound.

In addition to realistic sound, the durability of Zirconia offers audiophiles a scratchproof, ultra-tough construction for a lifetime of use. They even have detachable wires which can be replaced if they fray, as the Zirconia headphones outlast wires in the long run.

The RP-HJE900 in-ear headphones are constructed with Neodymium magnet for rich and powerful sound. They boast an impressive frequency response of 6Hz-26kHz for realistic sound with precision highs and rich low end. They have a sound pressure sensitivity of 100dB, impedance of 26 Omega and 12.5 mm drivers. The cord also has a slider to prevent tangling.

The RP-HJE900 Zirconia Audiophile In-Ear Headphones are available in either black or white. They will be available in May 2009, with a suggested retail price of $229.99.