Comdio H103VG4 Mono Call Center Telephone Headset Headphone with Mic + Volume Mute Control for Grandstream IP Phones GXP1400 GXP1405 GXP1450 GXP2124 GXP2120 GXP2140 GXP2140 GXP2160 GXP2110 GXP2100<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>ONLY WORKS FOR SOME SPECIFIC PHONES. SEE COMPATIBLE PHONE LIST IN DESCRIPTION， BUY THE ITEM TODAY IF YOU HAVE ONE OF THE PHONE MODELS LISTED BELOW.</li><li>Direct connect over the head headset headphone， No additional amplifiers or adapters required， Most easy setup headset solution.</li><li>Superior quality sound with the flexible adjustable noise cancellation microphone.</li><li>Super Lightweight， Super Durable Headset with Comfortable ear and mic cushions.</li><li>Professional Mic Mute / Volume Control built in.</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41g851zFiGL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31R5-q2ftEL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41%2BbqtCQBAL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31NacH-ClTL.jpg" noproxy>