Original OEM HTC White 3.5mm Stereo Headphone Headset Earphone,Mic/Remote Control 3 switch buttons for listening to music and answering calls Built-in Microphone featured noise reduction Phone buttons : Send button to answer calls, call waiting switch or redial last number and End button to end a call or use voice dial The inline microphone has been designed to filter out the background noise and minimise wind hiss to ensure calls are heard clearly even in the noisy environments Standard 3.5mm audio jack