Plantronics Voyager Legend/R InEar Bluetooth Headset - Black BLUETOOTH 4.0 HEADSET: Signature Plantronics audio technology and enhanced voice clarity through Bluetooth 4.0 and wideband audio support. SMART SENSOR TECHNOLOGY: Our technology senses when the headset is being worn so it can automatically answer calls as you place the headset on your ear or redirect audio to your phone when you set down your headset. VOICE RECOGNITION: Manage calls hands free without pressing buttons through Plantronics voice recognition technology, just say Answer or Ignore. NOISE CANCELLING TECHNOLOGY: Our triple mic technology cancels background noise and wind and can separate your voice from 80 dB's of background noise. WATER RESISTANT: P2i nano-coating technology will protect this Bluetooth headset from rain, sweat, and coffee spills so you can wear the headset in the office or at the gym.