Every great story comes with great music – Dual dynamic + balanced armature drivers – Natural sound equalizer – Graphene diaphragm, 25-step process – Stretchable matte wiring The Mi In-Ear Headphones Pro HD wired control is inspired by the overall design of the headphones. It is dressed in full metal and lined with highly stretchable matte wiring, making it sleek, compact, and feels great on your fingertips. The Mi In-Ear Headphones Pro HD are ergonomically designed to conform to the shape of your ear canal. The 45° angled in-ear design fits snugly and closes off to environmental noise, so you can enjoy pure music without much external interference. A pair of well-designed headphones shouldn’t just sound good, but should also act like an ear accessory. The Mi In-Ear Headphones Pro HD has adopted a rounded and 45° angled in-ear design to fit perfectly and deliver true music to your ears. It has precise cavity structure calibrations that lets music sing better. It also comes with the highly stretchable TPE wiring that is hardy and durable.