Type: Noisedamping Headphone / wireless headphone / noise cancelling headphone
Speaker Diameter: 40mm;
Sensitivity: 115dB (tolerance: 2dB);
Frequency Response: 20Hz-20, 000Hz;
Impedance: 32ohm;
Rated Power: 15mW;
Power Capability: 80mW;
Cable Length: 2.5M add 0.3M;
Plug Type: Stereo diameter: 3.5mm

Notes:

This noise proof headphone has function to rduce the noise. When you listen to music in a noisy surrounding, you can turn on/off the noise-reduction switch to shield noise. (effective noise-reduction: 15dB). It is equiped with air joint which enables listening to music in the airplane. When the plane takes off, you can listen to your program clear by making use of noise redustion function.