[Multiple uses]-- Fashionable dust protecting mask, breathable and comfortable, perfect for Dust,, Smoke, Pollution, Ash, Pollen. Suitable For Running , Cycling , Hiking , Skiing And Other Outdoor Activities. If you work on gardening, Nail Tech, craftsman such as cook, carpenter, plasterer , the anti-dust respirator is also a good choice.[Healthy breathing ]-- The electric fan uses a 4-stage suction filter design that allows the entire mask to be filled with fresh air.[Mini Air Purifier]--Built-in 650 mAh lithium polymer battery, which can be charged by USB, it can last 5-6 hours when fully charged. It is an air purifier that can be worn on the face, with good purification effect;[Application]It is suitable for KN95 masks or masks with the same thickness as KN95, (Not included Mask), you only need to cut a mouth on the side of the mask to use.Snap design, fast installation/disassembly in 10 seconds, easy to use.[Stylish design&Lightweight deign]Incorporating fashionable design elements, streamlined shape, ultra-thin shell, and cool LED lights, which not only meet your higher functional requirements for masks, but also add a sense of fashion and technology to the wearer.Battery type: polymer lithium batteryBattery capacity: 650mAhBattery life time: 5-6 hoursInput current: 5V/1A-2ACharging plug type: -USBFan working life: 10000 hourscolour:As shownMaterial:ABSPackage Contents:2 x electric mask fan2 x USB cableOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.