Specifications:The combination of moving coil and moving iron creates heavy bass and stereo music quality.Ergonomic design, which fits your ears perfectly and will not fall off easily.It is suitable for most mobile phones and electronic devices.Item Name:Wired EarphoneModel: K9Material: Plastic, Thermoplastic ElastomerType: In EarPlug: 3.5mmSensitivity: 99dBImpedance: 20Speaker Diameter: 9mmFrequency Range: 20Hz-20000HzStyle:01: with Mic Version02: with Mic and Volume Control VersionFeatures: Noise Reduction, Wired, with Microphone, Heavy BassCable Length: 1.2m/47.24" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 xWired Earphone