Xiaomi Mi Piston Air Capsule Earphones Unique capsule design, infant pacifiers grade silicone earplugs Make you enjoy the soft and clean sound, can fit most people 45 Angle of half-ear wearing, comfortable and not easy to fall off, 7 mm moving coil unit Innovative screw balance damping system, allows you to enjoy simple and natural sound Tough and durable Kevlar fiber, effectively protect earphone cable and extending service life