This Plantronics PTH200 is a modified version of the TriStar voice tube headset, made for use with the Spectralink PTB410, LTB100, E340, H340, I640, 8020 and 8030. The special shielding in the cord mitigates a buzz sound which would otherwise occur with a standard Plantronics headset. The PTH200 comes with the necessary cord to connect to Spectralink so no additional parts are required. 

Key Features:

• Earbud style headset
• Four sizes of user-selectable earbuds
• Unique three-point fit
• Quick-disconnect assembly
• Weighs less than half an ounce

Note: This headset come with 2 QD to connector plug in cables.  One is a 2.5mm connector and the other is a 3.5mm plug in connector.