Plantronics APS-1 Electronic Hook Switch (EHS) Category_Best4Headsets/Special Environment/Ear Defenders by Industry/Aviation Headsets The Plantronics HW700D Series requires

The Plantronics HW700D Series requires the Plantronics DA90 Audio Processor (Sold Separately) to connect to a computer

Supported on Windows and Mac OS

Adaptor and headset can be up to 10 meters apart without losing contact

Up to 8 hours of talk time

Distinctive and unique design

Plantronics APS-1 Electronic Hook Switch (EHS) Category_Best4Headsets/Special Environment/Ear Defenders by Industry/Aviation Headsets The Plantronics HW700D Series requiresAastra Agfeo Auerswald Funkwerk Siemens Optipoint 410* Siemens Optipoint 420* Siemens Optipoint 500* Siemens Optipoint 600* Siemens OpenStage T Systems Tiptel * Phones require a siemens acoustic Adaptor to be fitted.