The Plantronics CS540 wireless headset with Handset Lifter bundle offers you maximum productivity! Compatible with 98% of corded desk phones, you'll have the wireless freedom to walk and talk on phone calls up to 350 feet. In addition, the Plantronics CS540-HL10 bundle enables you to answer calls when you walk away from your telephone. That means you'll never have to run back to your phone again to answer a call and you'll have much less voicemails to return. Also, the Plantronics CS540 is convertible which allows you to choose between an ear hook and headband to choose your perfect fit for all day comfort!