Specifications: Brand name: BYZ Model: S366 Length: 120cm Interface: 3.5mm Remote control: Yes Color: White Frequency range: 20-20,000HZ Sensitivity: 93±3dB Impedance: 16Ω Features: Super cost-effective earphone. Closed design, effectively isolate from outer noise. High-end quality, no damage to the sound. Flat design earphone, easy and comfort wearing. Expansive sound range. Best gift for friends and colleagues. Package Included: 1 x BYZ-S366 3.5mm Headset