Introducing the plantronics calisto p620 no cord no fuss perfectly portable wireless uc speakerphone that takes unified communications uc on the road ideal for pc users on the go and mobile professionals who frequently engage in conference calls the calisto 620 is a portable bluetooth wireless speakerphone for making calls through a smartphone tablet or pc it is perfect for use at home in the hotel room or in an office for small group conference calls the first wireless speakerphone designed f