CS361/HL10 goes with CS70N, CS50, CS55, Voyager 510S & SupraPlus Wireless models. (non noise cancelling) with Curved Mic handset lifter fits on your telephone, letting you answer calls with the touch of a button, conveniently and automatically takes your handset off hook. Features: Automatically lifts handset and returns it to the cradle, Enables remote or one touch call answer/end with your Plantronics headset, For Plantronics cordless CS50, CS10 and CA10 telephone headset systems, Works with Plantronics S20 and A20 telephone headset systems, No desktop footprint, Compatible with most standard desktop phones, Fast operation.