Gain mobility – multitask, hands-free up to 350 feet. Use with Electronic Hookswitch Cable or Handset Lifter to remotely answer/end calls Audio controls volume/mute at your fingertips Adaptive power system optimizes for range and talk time Voice-dedicated DECT (1.9Ghz) technology eliminates Wi-Fi interference Advanced wideband audio using CAT-iq technology enables clearer conversations Choose narrowband mode to preserve talk time or wideband mode for clearer conversations Noise-canceling microphone filters out background noise Digital Signal Processing (DSP) provides more natural voice sound SoundGuard technology protects against audio spikes Conference in up to three additional CS540 or other Savi headsets for enhanced collaboration New headsets can subscribe to a base by simply docking the headset Auto answer option lets you answer/end calls by removing/replacing the headset from the base Up to 7 hours talk time on a single charge