Asus Zenfone 4 Premium Quality in Ear Buds Stereo Hands Free Headphones Headset with Built in Microphone Mic & On-Off Button Grey by Fone-Case Premium quality In-Ear Headphones for all 3.5mm Jack Inputs Made from aluminium material Microphone piece to talk hands free and buttons answer and end call Excellent sound quality with vivid bass definition Exclusive to Fone-Case