Features:<br /><br />1. Noise reduction create a comfortable and quiet enviornment.<br />2. The imported ABS material adopts plated workmanship.<br />3. Design of bevel pipe makes it comfortable to be worn.<br />4. Copper ring speaker ensures natural stereo sound for wonderful music enjoyment.Specifications:General Specification  Brand  HOCO M4  Model  M4  Color  Black， Pink， Green， White  Wearing Type  In-ear Cable Length(m)  1.2mTechnical Parameters  Microphone  Yes  Wired Control  Support  Plug Type  Line type  Receive Sensitivity  105+5dB  Impedance  16&amp;amp;Omega;+10%  Frequency<br />  Response  20-20000HzPackage  Included:  1* HOCO M4 Earphone  1* Pair of Earplugs(Large)  1* Pair of Earplugs(Small)<br /><br />