Feature:
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<br />Function button:
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<br />Phone call: Press once--answer/hung up; Press for 3s--reject.
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<br />Music: Press once--play/pause; Press twice--next song; Press three times--last song.
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<br />Specifications:
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<br />Frequency response range: 20Hz-20KHz
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<br />Impedance: 32±15%ohms
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<br />S/N: 96db
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<br />Signal: 104±4db
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<br />Cable length(Y style): 1.2M
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<br />Plug: 3.5mm plug 
<br />
<br />Product Dimensions:8 x 4.5 x 1.1 inches