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Sound-BD.Com Product Specifications: Speaker Diameter: 10 mm Impedance: 32 ohms Sensitivity: 116 ± 3 dB / mW Frequency response: 18 - 22000 Hz Rated Power: 2 mw See More: http://www.sound-bd.com/headphone-and-music-player/gorsun-gs-a72-in-ear-headphone.html |