http://en.wikipedia.org/wiki/Phone_connector_%28audio%29#TRRS_standards                   <strong>Brand:</strong> awei <br />             <strong>Model  :</strong> ESQ9i <br />             <strong>Color :</strong> Pink, Blue, Black, White <br />             <strong>Wearing type :</strong> In-Ear <br />             <strong>Function :</strong> Microphone                               <strong>Connectivity :</strong> Wired <br />             <strong>Connecting interface :</strong> 3.5mm <br />             <strong>Application :</strong> Portable Media Player, Mobile Phone, Computer <br />             <strong>Plug interface:</strong> Full-sized <br />             <strong>Cable length :</strong> 1.2m <br />             <strong>Driver unit:</strong> 9mm <br />             <strong>Frequency response :</strong> 20~20KHz                                            <strong>Package weight:</strong> 0.067 kg <br />             <strong>Product size (L x W x H) :</strong> 120 x 2 x 1 cm / 47.16 x 0.79 x 0.39 inches <br />             <strong>Package size (L x W x H) :</strong> 15.5 x 8.5 x 3 cm / 6.09 x 3.34 x 1.18 inches                               <strong>Package contents:</strong> 1 x In-ear Earphone, 2 x Pair of Earbud, 1 x English / Chinese Manual, 1 x Cable Clamp