Features: Professional titantium plating dynamic moving coil unit earphone, with a wide sound range, representing sensational interpretation, passive noise reduction. 10HZ-20KHz wide sound field, accurate positiong deep 3D sound field of clear for image after several modeling and 3D printing debugging. With hemispherical diaphragm and titantium coating, it can improve the strength of the diaphragm and transient response and audio frequency effiency, medium and high frequency response has wide pure sound. Die casting metal ornament, transparent PC cavity, aluminum alloy cavity and soft silicone earplugs, creating a sense of beauty as jewwelry grade. Ergonomic design, comfortable and free to wear, fits the auricle, which can reduce the external noise interference effectively. High purity oxygen free copper core, standard 4N dual winding mateerials, it can reduce transmission distortion and gives you a comfortable sense of hearing. Specifications: Product Name: Wired Headphone with Mic Model: QKZ-AK3 FiLe Wearing Type: around the ear type Vocalism Principle: Dynamic Coil Communication: Wired Plug Interface: 3.5mm Frequency Response Range: 10HZ-20KHz Impedance Range: 1710% Sensitivity: 109dB3dB Open Total Harmonic Distortion: 1% Drive Unit: 10mm Dynamic Wire Type: OFC oxygen free copper dual wire Material: for Shell TPE+Silicone Cable Length: Approx. 1.2 for m/3.93 ft Color: White, Black, Cyan, Colorful(optional) Note: Please allow 1-2cm errors due to manual measurement,pls make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 Piece Earphone