Masks can help protect both you and those around you. LG's new wearable air purifier put your protection in its sights, with two H13 HEPA filters just like the ones used in LG's home air purifier products. The reusable device also has two fans to purity the air you breathe that are controlled by a respiratory sensor that measures the speed and volume of your breathing and adjusts accordingly. The mask is said to work for up to eight hours on low-power mode and is powered by a rechargeable 820mAh battery. And it even cleans itself thanks to the ultraviolet LED-lit storage case that cleans the surface while charging.