Product Description Manufacturer Xiaomi Model Number QTER01JY Type of Headphones In-ear Wired control Available Colors Gold / Silver Conductor Material Enameled Copper Wire Speaker Impedance       32Ω Weight 14g Cable Length 1.25m Sensitivity 101dB Jack Type 3.5mm Gold Plated Rated Power 5mW Standards GB/T 14471-2013 Frequency Response 20-20,000Hz Package Contents A set of Mi In-Ear headphones pro | 3 sets of ear buds, each with a different size(XS/S/L)