Plantronics SupraPlus SL Monaural wireless headset systemIncludes PL-HL10 handset lifterNew standard in headset performance, reliability and all-day wearing comfortCannot answer calls remotely without a PL-HL10 handset lifter (included)-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 audioqualityComfort headband and T-Pad design, aswell 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 thePlantronics base, 4) plug AC adapter into an AC outlet and into the Plantronics base's AC charging jackLeatherette ear cushionBox dimensions: 9.5"L x 7"W x4.5"H1 Year manufacturer's warrantySilverPackage Contents:HeadsetCharging cradle baseHandset lifterTelephone cordAC adapterPLCS351NHL10