Specifications: The combination of moving coil and moving iron creates heavy bass and stereo music quality. Ergonomic design fits your ears perfectly and this earphone will not fall off easily. 3.5 more→mm plug is suitable for most mobile phones and electronic devices, ensuring sound quality. Item Name: Wired Earphone Type: In-ear Material: Plastic, TPE Impedance: 20Ω Sensitivity: 99dB/MW Frequency Range: 20Hz - 20000Hz Microphone: with Microphone Features: In-ear, Universal, Comfortable, Subwoofer, Stereo Speaker Diameter: 9mm Plug Diameter: 3.5mm Cable Length: 1.2m/47.24" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly