Premium Stereo Headset Hands-free for LG Xenon GR500, GR700 (Vu Plus), GS505 (Sentio), GD710 (Shine II), GT950 (Arena), GW820 (eXpo), LG CF360 Brand New High Quality MyBat Handsfree Headset The new packing is compact size and nice looking, and the silver-plated insert paper gives prominenc Crystal clear and high quality voice for both talking party, noise cancellation, high-velocity eleme Sound Pressure Level: 107dB?3dB/100mW Total Harmonic Distortion: &lt;=5,(Input Power: 10mW; Frequency Range: 20Hz~20kHz)