LG PuriCare is a fashionable device that protects the nose and mouth to remove air contaminating particles. You can wear it for many hours. You can also charge it. When not in use, it can be placed into a charging case that has a UV-LED light built into it. The UV-LED light kills bacteria and germs, which is good for the environment. The device also features a mobile app that notifies you when it needs to be recharged.