Plantronics SupraPlus SL Monaural wireless headset systemNew standard in headset performance, reliability and all-day wearing comfortCannot answer calls remotely without a PL-HL10 handset lifter (sold separately)Durable, lightweight headsets designed for contact center and officeprofessionalsImproved sound quality, enhanced stability and an updated, stylish designBusiness-critical reliability and comfortDelivers improved receive-side audio qualityComfort headband and T-Pad design, as well as the bendable noise-canceling microphone boom work to enhance audio quality and the user experienceHeadband twists out of the way for convenient quick call pick upNoise-canceling microphone allows clear conversations in noisy environmentsSet-up: 1) unplug curly handset cord from telephone, 2) plug the telephone cord that is attached to the Plantronics base and plug it into the curly handset cord jack on the telephone, 3) plug curly handset cord into the handset jack on the Plantronics base, 4) plug AC adapter into an AC outlet and into the Plantronics base's AC charging jack1 Year manufacturer's warrantySilverPackage includes headset, charging cradle base, telephone cord, and AC adapterPLCS351N