Mi Headphones(Xiaomi),Crafted for true sound representation,Massive 50mm diaphragm, incredible sensitivity,Semi-open design for true sound representation All about that bass Massive 50mm diaphragm, incredible sensitivity A concert hall experience Semi-open design for true sound representation Hear and be heard Built-in Knowles microphone / Kevlar fiber cables Speaks volumes 32-ohm low impedance Going for gold Stunning aluminum grilles / Weighs only 220g