The noise cancelling feature in Bluetooth headsets refers to CVC 6.0 noise cancelling technology that can filter out the noise picked up by the microphones. This process is defferent from the active noise cancelling (ANC) feature in headphones.
Let’s say you talk on phone in a noisy environment, the caller will hear your voice subtracted from the background noise.
If your Bluetooth headsets have ANC – it will instead filter out the background noises.
I haven’t yet found any Bluetooth headsets which have both CVC 6.0 and ANC.
Plantronics Voyager 5200, Plantronics Voyager 3200 and Jabra Talk 2 are the best picks for now – according to thewirecutter.