Overview Great sound performance Extremely small & lightweight Excellent attenuation of ambient noise ideal to be used with all MP3, CD, DVD, MD players & portable game systems with 3.5 mm headphone sockets Frequency Response: 18 Hz ~ 20k Hz Impedance: 32Ω Sensivity: 116 d B (1 k Hz, 5 Vrms) Cord Length: 100cm Perfect fit in the ear canal Input Plug: 3.5mm X style stereo plug Specification Weight Approx:12.1g Size Approx:100 x 2 x 1