The Plantronics Voyager PRO HD with Smart Sensor technology redefines hands-free convenience. This headset is so smart, that by simply placing it on your ear, it automatically answers your phone or transfers calls back and forth between your phone and headset. Voyager PRO HD takes you beyond the headset, with our Vocalyst service that lets you manage email, check weather or update Facebook, and the Plantronics MyHeadset app that gives you tips, tricks and tools for Android-based phone. Combine HD streaming audio plus natural sound and superior comfort and you've got the smartest headset for smartphones.