Comdio 2.5mm Call Center Telephone Headset Headphone with Mic + Volume Mute Controls for Grandstream AT&T TL88002 TL86103 TL86003 TL76108 TL7610 TL88102 TL86109 TL86009 with 2.5mm Socket (H203VP7) 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. Direct connect over the head head headphone, No additional amplifiers or adapters required, Most easy setup headset solution. Superior quality sound with the flexible adjustable noise cancellation microphone. Super Lightweight, Super Durable Headset with Comfortable ear and mic cushions. In-line Mic Mute / Volume Control built in.