We tested wireless and wired headsets in separate batches, using the very same methodology for both groups: We tested Each individual headset for at least just one complete workday, having just one- to 2-hour breaks between stints. On the subsequent times, we swapped among headsets to get a side-by-facet comparison. https://allhealthmarket.com/product/smart-wearables/smart-electronics-smart-wearables/headsets/lenovo-lp40-pro-thinkplus-earphones-tws-bluetooth-5-1-wireless-sports-headphone-waterproof-sport-noise-reduction-headphones-touch-control-250mah/