Vktech&reg; Hot Original Xiaomi Smartphone Piston II In-Ear Earphone Wire Control+MIC (Blue) This is Original xiaomi Pistons 2 new latest version earphone. not COPY or OEM Enamelled copper wire core material Speaker Impedance: 12 ~ 16 Answer and end calls with the touch of a button Built-in microphone+button, Soft,comfortable ear buds