http://en.wikipedia.org/wiki/Phone_connector_%28audio%29#TRRS_standards                   <strong>Brand:</strong> awei <br />             <strong>Model  :</strong> ES100M <br />             <strong>Color :</strong> Red, Black, Blue, Silver <br />             <strong>Wearing type :</strong> In-Ear <br />             <strong>Function :</strong> Noise Cancelling                               <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> 8mm <br />             <strong>Frequency response :</strong> 20~20KHz                                            <strong>Package weight:</strong> 0.103 kg <br />             <strong>Product size (L x W x H) :</strong> 120 x 2.1 x  1 cm / 47.16 x 0.83 x 0.39 inches <br />             <strong>Package size (L x W x H) :</strong> 18 x 13 x 2.4 cm / 7.07 x 5.11 x 0.94 inches                               <strong>Package contents:</strong> 1 x In-ear Earphone, 2 x Pair of Earbud, 1 x English / Chinese Manual, 1 x Cable Clamp