N60 NC | First class Noise Cancelling headphones fine-tuned for travelling
Amazon.com: IPD IPH-165 Binaural NC Headset with 2.5mm Jack for Polycom IP 320,321,330, Cisco Linksys SPA,Grandstream GXP,Panasonic KX, Zultys, Gigaset & 2.5mm Jack(3 Poles) Port with Phones : Electronics
Amazon.com: IPD IPH-255 Double Ear NC Headset with 2.5mm Jack compatiblewith Polycom IP 320,321,330, Cisco SPA,Grandstream GXP,Panasonic KX, Zultys, Gigaset & 2.5m Jack(3 Poles) Port with Phones : Electronics
Amazon.com: IPD IPH-160 Monaural NC Headset with 2.5mm Jack(2 Black Bands) for Ciso SPA,Panasonic KX and Other Cordless Dect Phones with 2.5mm Headset Jack Port. No Smart Phone use. : Electronics
Plantronics HW710 EncorePro Over-the-Head NC Headset (78712-101) at Macondo