Poly VOYAGER 5200 UC and B5200, mono Bluetooth headset

A 2-in-1 red button easily activates Siri, Google Now or Cortana. Notifications will inform you of talk time and even announce the names of incoming calls so you can simply say "Answer" or "Ignore" without lifting a finger. During calls, simply press the red button to easily activate or deactivate the Mute function. The headset's dynamic alerts will immediately tell you if you're on Mute while you're talking. Plus, temporary voice alerts will constantly remind you if the Mute function is still on.