Our best-selling blueparrott b450-xt has been upgraded to keep pace with the demands of your busy day. Now with added ip54-rated durability, usb-c charging and firmware updates on the go, as well as all the features that come as standard with blueparrott headsets, including our industry-leading 96% noise cancellation, voicecontrol™ and customizable parrott button™, the b450-xt delivers impressive levels of comfort, fit and performance. Headset features audio drivers: 36mm connectivity: bluetooth® microphone: yes ear cup controls: yes frequency response: 150 - 6800 hz adjustable headband: yes noise cancelling: yes rotating microphone arm: yes microphone type: bidirectional