We tested wireless and wired headsets in separate batches, using the identical methodology for the two teams: We analyzed Each individual headset for at least a single comprehensive workday, getting a person- to 2-hour breaks in between stints. On the next days, we swapped among headsets for the side-by-facet comparison. https://allhealthmarket.com/product/smart-wearables/smart-electronics-smart-wearables/headphones/b19-wireless-headphones-with-fm-radio-bluetooth-headset-stereo-microphone-2/