Generic Xiaomi 2nd Piston Earphone Ii Headphone Headset Earbuds with Remote & Mic for Smartphone - Gold 3-button remote and mic, compatible with most Android devices Aluminum sound chamber forming diamond cutting knife, Beryllium diaphragm, New double damping system more pure balanced sound, Kevlar fiber cable, with TPE ends, Compatible with mainstream Android phones Volume up/down functions not supported on iOS devices A new coat of gold plated for that all-classic feel,New dual damping system for purer sound quality Remote Control and Mic for smart phone. (Volume Control Doesn't work for iPhone)