The Plantronics CS530 Over-the-Ear Wireless Headset weighs only 0.74 oz (21 g) and features DECT (digital enhanced cordless telecommunication) with a wireless range of up to 350' (106.7m). The headset supports one-touch call/answer, volume up/down and mute controls, as well as premium wideband audio technology. It also uses an adaptive power management system that optimizes the headset for range and talk time. Plus, it provides a choice of 4 different wearing options - one of which is sure to match your personal style. You can even conference in up to three additional CS500 or Savi headsets. Other features include quick guest headset subscribing and compatibility with an Electronic Hook Switch Cable or a Handset Lifter for remote calling control.