HW530 EncorePro OTE Headset Mono Plantronics HW530 is lightest headset on the market. A balanced mic that stays in place for all day comfor Flexible noise canceling microphone boom allows you to adjust for the best voice quality Wideband audio with SoundGuard technologySoft foam ear cushions provide all-day comfort with the HW530 Requires Plantronics QD cord to connect to your desk phone