Featuresr piston design give you a better sound qualityr aviation grade magnesium aluminum alloy metal fuselage fastness texture upscale and exquisite more fashionabler using ergonomic design wearing more comfortabler using high purity oxygen free copper core wire rope self defense techniques increase the bulletproof fiber use soft tpe make ouside scarfskin effectively solve the problem of 90 nondurable which cuased by wire flexibilityheadset is more durabler three sizes well clos