Features:1. There are three changeable tuning click. You can change it according to your personal interests.<br />2. Built-in clear microphone・ support answer call.<br />3. Enhanced sound quality・ outstanding bass and treble clarity.<br />4. Greater isolation from exterior ambient noise.<br />5. Excellent sound quality and super clear sound.<br />Specifications:General Specification  Brand  Smartisan  Model  S-1000  Color  Black・ Red・ White  Wearing Type  In-ear Cable Length(m)  1.3mTechnical Parameters  Microphone  Yes  Wired Control  Support  Plug Type  L type  Rated Power  10mW  Receive Sensitivity  108dB  Impedance  40&amp;amp;Omega;  Frequency <br />  Response  20-25HzPackage  Included: 1* Original Smartisan S-1000 Earphone 1* Pair of Large Earplugs 1* Pair of Small Earplugs<br /><br />