Part number: 506514 Bluetooth 4.2 wireless technology in an ergonomically designed lightweight, comfortable and collapsible travel headset perfect for travel. Connectivity Technology: WirelessNoiseGard adaptive noise cancellation ensures superior sound quality in every environment.Intuitive user control and convenience thanks for voice prompts, touch controls, NFC pairing, smart pause and automatic on/off.Triple microphone array delivers business class communications with exceptional vocal clarity..Sennheiser sound signature quality with select