Hot Pink and White High Quality Stereo Handsfree Headset Mic Earphone Plugs for Nokia 2680 , 7510 , 1680 , 6301 , 6300 , 1208 , 5610 , 5300 , 5700 , 2760 , 1611 , 2720 , 3711 , 2330 , 2320 Classic, Huawei M860 M-860 Ascend Frequency Range: 20Hz~20kHz Sound Pressure Level: 107dB3dB/100mW Total Harmonic Distortion: &lt;=5,(Input Power: 10mW; Frequency Range: 20Hz~20kHz) Crystal clear and high quality voice for both talking party, noise cancellation High velocity element for excellent stereo effect