– Range up to 350 feet away for maximum mobility- Offers you a choice of four comfort-tested wearing options to match your personal style- Premium wideband audio quality- One-touch call answer/end vol /- and mute- Adaptive power management system optimizes for range and talk time- Conference in up to three additional CS500 or Savi headsets for enhanced collaboration- Guest headsets can subscribe to a base by simply docking the headset- Use with Electronic Hook Switch Cable or Handset Lifter to remotely answer/end calls