Detailed Product Description EXCO earphone,in-earphone,headset,handsfreee headphoneHave sweet shape and mulit-colorType: open, dynamic Conductor: about 1.2m Plug: 3.5mm Quality: about 5g (excluding wire) Impedance: 32ohm Driver unit: 10mm, dome type Frequency response: 20-20KHz Maximum power: 10mw Sensitivity: 115 ± 3dB