Description: High-grade PU leather earmuffs ensure sound insulation and comfort. 3D stereo surround sound, wide sound field, accurate positioning. Lightweight, comfortable and long-wearing. Microphone noise reduction technology, support 130 degree rotation. Composite dual diaphragm 40mm speaker, subwoofer. Specification: Speaker Diameter: 40mm Impedance: 32Ω Sensitivity: 104±3dB Frequency Response: 20HZ-20KHZ Microphone Diameter: 6.0*5.0mm Sensitivity: -34±3dB Impedance: 2.2KΩ Directionality: omnidirectional Line Length: about 2.2m Headphone Jack: 3.5mm stereo Package Includes: 1 Piece Headset Note: Please allow slightly 0-1cm difference due to manual measurement. Color may be slightly different since different monitor. Thanks for your understanding and attention.Wish you a pleasant shopping experience!