What are The Maximo iM-490 iMetal Isolation Stereo Earphones constructed from?”
Featuring a lightweight aluminum alloy body and high-fidelity neodymium drivers, the iM-390 iMetal Isolation Earphones are designed to provide performance, style and quality for use with any MP3 player, smartphone, PDA as well as air travel. Features: Lightweight alloy metal earphones Superior audio fidelity & deep, powerful bass 3 sizes of eartips for snug comfortable fit Extension cable for extra length 2.5mm and air travel adapters Stylish carrying case 9mm neodymium drivers Frequency response: 18Hz-22KHz Max.