Featuresr lightweight compact and exquisite design easy to carry withr mim metal forming process let the headset molding accuracy of 13 and the wall thickness 05mmr dynamic driver inverted makes the sound better with normal assembling in the same driverr noise isolating soft eartips gives you a higher hifi sound qualityr there has a blind dot under the l which made for blind people to distinguish the l and r in the dark so that make them enjoy music worldr bulletproof silk with ox