Product descriptionLumena A1 air purifier with built-in 2000mAh battery, using medical grade high-performance HEPA H13 filter element, can block suspended particles in the air, including ultra-allergen particles, bacteria and viruses (blocks 99.97% PM2.5) It is a high-efficiency air filter. In addition, the product is equipped with an air quality display function. If it detects that the air quality is poor, it will automatically turn on the turbo function of the smart sensor to enhance air purification and protect your health. 360 degree no dead angle clean air designAdopt medical grade HEPA H13 filter to block PM2.5 particles up to 99.978%Built-in 2000mAh battery, can be used for up to 7 hours without any problems5 air filtration stages, effectively remove fine dust, allergens and bacteria in the air down to 0.3 micronsIntelligent air detection function, LED display PM2.5 index, automatic adjustment of purification intensitySuper light weight, only 290 g25 dB low noise