First custom earphone in the world with a single 14mm dynamic driver couples with advanced frequency suppression technology (FST). Frequency Response: 10-20000 Hz Impedance：16ohms（including cable） Sensitivity (at 1kHz)：116dB spl (1mW) Important: Due to the size of the driver, people with small ears may not be able to fit. We would need your ear impressions to check for sizes...
Skylon flight metal 3 way adjustable Sport headphones, have a radical new design aimed at athletes and Audiophiles. All metal, lightweight, 3-way adjustable for different size ears.