Simple and elegant design Full matte black with dual headband design looks simple and elegant, resist violent distortions of the metal headband makes headphone more durable. Skin-friendly ear cushion Using memory sponge ear cushion which could quickly get back to shape after wearing, reasonable holding force with proper weight and soft earmuffs can protect the ear against the pressure. Personalized customization speaker 50mm customized speaker brings strong bass with good resolution can through accurate step location. Lightweight design Simple dual headband design, weight 280g not including cable, comfortable to wear without pressure for the head. SPECIFICATIONS: Connection type: Wired with USB and 3.5mm jack (2.5 Meters)Lighting: YesLoading impedance: 24±15%ΩSensitivity: 98±3dBFrequency Response: 20~20KHzDriver size - Diameter: 50mmProduct Weight: 280±10gProduct Size: 207mm*167mm*107mmCompatibility: PC/SmartphoneMicrophone:Driver size - Diameter: 6mmSensitivity: -42±3 dBDirectivity: OmnidirectionalOutput impedance: 2.2KΩFrequency response: 100~10KHzTotal harmonic distortion: ≦ 5%