headphone 1. High Quality!! 2. Very Cheap Price! 3. Fashion design 4. 2012 top seller 1)Speaker diameter: Φ40mm 2)Impedance: 32 ohms 3)Sensitivity: 104±2dB, S.P.L. at 1kHz4)Frequency response: 20Hz-20,000Hz 5)Max. input power: 100mW 6)Cord length: approx. 2-2.2m7)Plugs type: 3.5mm stereo & MIC 3.5mm If you have any interest, pls feel free to contact us. 2012 most popular cheapest headphone