Overview: Headset CS520 Plantronics Another CS family headed for the bestseller list. Plantronics legendary CS family is setting a new wireless standard for desk phone communication with the CS500 Series. The new system features the lightest DECT headset on the market, a new streamlined design and improved performance all with the same reliability for hands-free productivity that has made the CS family a bestseller for nearly a decade. Specifications: Plantronics CS520 Headset Audio controls volume/mute at your fingertips Narrowband or wideband: up to 6,800 Hz Use with EHS cable or Plantronics HL10 lifter for remote answering Superior DECT 6.0 technology eliminates interference Wi-Fi networks Noise canceling microphone filters out background noise Advanced wideband audio using CAT iq technology up to 9 hours of talk time DECT 6.0 (1.9Ghz) up to 350 ft of wireless roaming Over-the-Head Binaural wireless headset adaptive power system optimzes for range and talk time SoundGuard DIGITALTM: protects against sound levels above 118dBA; Anti-startle detects and eliminates any large sudden increase in signal level; Time-Weighted Average prevents average noise level from exceeding 85dBA (CS510, CS520) Part Number: 84692-01