They're able to cut down the minimal rumble of bus engines and block out office chatter. In addition they last over 37 hrs repeatedly with the ANC on and have a bass-major sound profile that provides additional thump, rumble, and boom to mixes. For those who like the concept of https://allhealthmarket.com/product/smart-wearables/smart-electronics-smart-wearables/headsets/lenovo-lp40-pro-earphones-bluetooth-5-1-wireless-sports-headphone-waterproof/