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...
The iPod Headphones give you high quality sound and enhanced bass, and they fit comfortably in your ear. They're compatible with iPod nano, iPod video, iPod mini, iPod Shuffle, and any audio source with a 3.5 mm headphone jack