1. Hyperbolic shape memory material with titanium steel outside and soft silica gel inside; the titanium steel provides a solid structure to reduce the chance of accidently breaking the headphones and increases the product’s life; at the same time the soft silica gel makes the wearing comfortable. 2. 4D rotatable muffs allow four-direction rotation to fit your ear position, combined with aluminum piston slide button embedded into a durable stainless steel slide runner to make the wearing fit more convenient. 3. Streamlined design and Ferrari red make you feel the fast and furious features of music. 4. Intelligent dual systems in-line control, compatible with both IOS and Android.