Speaker Specifications: Diameter 40mmSpeaker Impedance: 24ΩFrequency response: 20HZ-20KHZSensitivity: 101dB ＼ 3dBRated power: 15mWMaximum power: 30mwCable length: 2.4mPlug Diameter: 3.5mmType: headphone、 headset、 headphonesHeadphones Type: HeadsetHeadphone output audio: PC computerFeatures:1、 the unique product design、 classic style2、 highly sensitive microphone、 voice clear and smooth3、 using high-quality sponge、 long wear not tired4、 wire design、 simple manipulation in one hand;