Approved by Plantronics, this telephone has all the features of the Berkshire 600 with the added benefit of Bluetooth technology. The Plantronics Voyager 510 headset with it’s noise cancelling microphone and Windsmart technology provides excellent sound quality, combined with the quality and reliability of the Berkshire 600, this product is a unique, essential office tool for the 21st century user. Headset sold seperately, please click [nLink 1]here[/nLink].