- Featuring a lightweight aluminum alloy body and high-fidelity neodymium drivers, the iM-390 iMetal Isolation Earphones are designed to provide superior performance with a style that is absolutely unique. These earphones come loaded with accessories including 3 sizes of eartips, 2-foot extension cable, and stylish zippered carrying case. So that you can use these earphones anywhere for any situation, adapters are included for PDA, smartphone, and air travel.
Frequency response: 18Hz-22KHz
Sensitivity (1KHz, 0.1V): > 100dB
Maximum SPL output: >120dB