Xiaomi Piston In-Ear Headphones Earphones Earbuds Headset with Remote &amp; Mic - 2017 Colorful Basic Edition<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Improved 3rd Gen balanced damping Optimized front cavity for improved treble performance </span></li><li><span class="a-list-item"> Spiral air-flow channels Patented technology to fully optimize mid-range and bass output </span></li><li><span class="a-list-item"> A whole new level of fidelity CNC Aerospace-grade metal chamber with Zircon sand blasting process surface，wear and scratch resistant.Durable，break-resistant cable </span></li><li><span class="a-list-item"> Compatible with Android devices.Volume +/- DO NOT Work on i/OS devices except Play/Answer/Switch. 2 extra silicon S/L size earbuds offered </span></li><li><span class="a-list-item"> This is China Version only. The QR code on the cord for product authenticity is not work in US. If you concern about the authenticity， please contact the seller for the instruction. </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/31NPYYEx2-L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41NXmToKRyL.jpg" noproxy>