MI0223L Features Built-in microphone Supports hands-free calling function High quality stereo sound Equipped with silicone winder and 1.2m-length cable Silicone ear buds， comfortable to wear Allows you to enjoy your favorite music or videos at anytime Suitable for digital devices with 3.5mm audio jack General Specs Brand & Model Kanen IP-205B Speaker diameter 10mm Frequency Response 20-20000Hz Impedance of earphone 32Ω±15% Sensitivity of earphone 92±3dB Connector 3.5 mm audio jack Cable length 1.2m A microphone head size 4x1.5mm Sensitivity of microphone  -42±4dB Impedance of microphone ≤2.2kΩ  Compatibility Digital devices with 3.5mm audio jack Package Details Weight: 54.57 g Size: 13.5*10.2*3 cm