The hottest The CS 55 Wireless Headset System from Plantronics???? combines the clarity of corded technology with the mobility of wireless, so you can move around the office to wherever business takes them without interrupting or missing a call. It implements 1.9 GHz UPCS voice-dedicated wireless technology. The CS55 provides you with 10 hours of unencumbered talk time and the option of remote answering with the HL10 Handset Lifter, so you never miss calls when away from the workstation.  ...More Details