New Plantronics CS540 - $249 Special Click Here To Order Trade up to the new CS540. First we made it lighter. At only 21 grams, the CS540 Series features the lightest DECT headset on the market. That means all-day comfort for all-star performance. Then we made it better. Increased range for maximum mobility, one-touch controls, energy efficient power management, simple plug-and-talk installation; the CS540 Series does it all.   Make a good call with the new standard in wireless desk phone headset systems. Range up to 350 feet away for maximum mobility Three wearing choices for tailored comfort Premium wideband audio quality One-touch call answer/end, vol +/-, mute and flash controls Smart power management system optimizes for range and talk time Conference in up to three additional CS540 or Savi headsets for enhanced collaboration New headsets can subscribe to a base by simply docking the headset Use with Electronic Hookswitch Cable or Handset Lifter to remotely answer/end calls