Plantronics legendary CS family is setting a new wireless standard for desk phone communication with the CS500™ Series. The system features the lightest DECT™ headset on the market, a streamlined design & enhanced performance all with the same reliability for hands-free productivity that has made the CS family a best-seller for nearly a decade. SUPERIOR CALL MANAGEMENT With one-touch call answer/end, vol+/-, & mute, manage calls from up to 120 metres from the charging base. The CS500 system also enables you to conference in up to three additional headsets for easier 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. OUTSTANDING AUDIO QUALITY Voice-dedicated DECT™ technology provides better audio & eliminates interference from Wi-Fi networks while advanced wideband audio provides high definition voice quality. Your choice of narrow or wideband professional grade audio quality -- choose narrowband to extend talk time or wideband mode to enable clearer conversations. An extended boom & noise-canceling microphone filter out background noise, so listeners can hear conversations clearly & enhanced Digital Signal Processing (DSP) provides more natural sound, delivering clear audio the way it's intended to be heard. POWER IN THE BASE A sleek charging base is included with the CS500 Series. An adaptive power system optimizes for range & talk time by automatically downshifting to low power when the headset is close to the base to save battery life.