The C400-XT is ideal for those who need a discreet, customer-facing headset with the highest levels of noise cancellation. Enjoy premium BlueParrott features designed to boost productivity and collaboration, in a compact design with two different wearing styles. Ideal for hard hat wearers. Blocks out 96% of background noise. Be heard on your calls, whatever’s going on around you. Connect to 2 mobile devices at the same time and stay in touch, with great-sounding conversations all-day.