2.5mm Headset Headphones With Mic Call Center Telephone IP Phone Cisco DECT BT

Office headset with 2.5mm jack for Panasonic KX-NT136 KX-NT343 KX-NT346 KX-NT366 KX-T7603 KX-T 7625 KX-T7630 KX-T7633 KX-T7636 KX-T7730 KX-T7735, for Cisco SPA 501G 502G 504G 508G 509G 525G, for Polycom 320 321 330 331(included but not limited).

eBay