LG PuriCare™ mask-type Wearable Air Purifier Smart Intelligent Electric Face Mask Good air wear SPECIFICATIONS ： Colour：white Filter dust collection efficiency：HEPA 13 level (2 in total) Motor：Double inverter motor Fan：Double purification fan Sensor：Patented breathing sensor Fan air volume (LPM)：20-55 Operating volume (dB)：43dB(Min)~54dB(Max) Battery life：4hr(strong) / 6hr(medium) / 8hr(weak) Charging time：About 2hr Fan running：Three-stage wind speed (weak-medium-strong) Battery：Built-in lithium battery (820mAh) USB Type C charging Size(mm)：156 x 110 x 63 Weight：126g Origin：Korea ▪️HEPA 13 medical grade full-effect protective filter, thoroughly purifies the air ▪️Double frequency conversion clean fan, reduce inhalation resistance, better breathing experience ▪️Ergonomic design, comfortable fit, reduce air leakage ▪️The face is fitted with medical grade silicone, which is skin-friendly and comfortable, and can be detachably washed ▪️Replaceable accessories make cleaning more secure ▪️USB Type C charging, up to 8 hours of continuous use Long-term use USB Type C charging, repeated use The built-in large-capacity battery can last for 8 hours, and it can be used repeatedly after only 2 hours of charging. Safe to use Medical grade materials, providing you with comprehensive protection Made of medical grade silicone, it protects your skin and even your breathing from harm. Common problems and precautions： Q1 . How to clean the outside of the mask? A : The surface of the mask shell (outside/inside) can be wiped clean with a soft damp cloth, please be careful not to let water enter the inside of the product Q2 . Can spraying pesticides and kitchen fume filter? A : It is recommended to use a professional face mask when spraying pesticides; the kitchen oil fume is a mixture of gas and very fine particulate harmful substances (PM2.5). The HEPA13 filter can effectively filter the very fine particulate matter in the oil fume and avoid inhalation into the lungs. Q3 . Is it waterproof? Can I wear it if it rains on my bike? A : The product (chassis part) is not waterproof. It is recommended to avoid letting water run into the machine. Q4 . Why are there no vents on the 10-piece inner pad? A : The newly designed inner pad without vents can reduce the user's own mouth foam from pollution; the inner pad that is provided or purchased is a light version inner pad, which has better air permeability What is in the package： Mask type air purifier：1 piece Facial fit medical grade silicone：1 piece Full-effect protective filter (HEPA 13)：2 pcs Replacement pad：10 pieces (5 pieces x 2 pack) Ear hook：1 pair (2 pieces) Decompression comfort zone：1 piece Storage bag：1 piece Type C charging cable：1 piece