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.3.5mm plug is suitable for most mobile phones and electronic devices, ensuring sound quality.It is the best choice for listening to music, watching movies, online chatting, etc.Item Name: Wired EarphoneType: In-earMaterial: Plastic, TPEImpedance: 20Sensitivity: 99dB/MWFrequency Range: 20Hz - 20000HzMicrophone: with MicrophoneFeatures: In-ear, Universal, Comfortable, Subwoofer, StereoSpeaker Diameter: 9mmPlug Diameter: 3.5mmCable 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 x Wired Earphone