Noise-Isolating Earphones

Frequency response 20Hz~20KHz
Sensitivity 954dB
Impedance 16ohm
Driver unit 9mm
Cable Length 1.2m
Noise-isolation YES
Package Contents:

GHP-220X headphones
Three sizes of ear cushions
Multi-language quick guide

http://www.geniusnet.com/Genius/wSite/ct?xItem=52209&ctNode=3639&mp=1