![]() ![]() Data from Smart Mi Lab, and may vary slightly due to differences between individual products. *High-efficiency filter with a larger surface area of 22,000cm²: The surface area of filter used on the high-efficiency filter of Xiaomi Smart Air Purifier 4 was 22,000cm². * 99.97% elimination of 0.3μm particles: Data from China Testing & Inspection Institute for Household Electric Appliances Inspection. *Effective coverage area of 28-48m²: Data from China Testing & Inspection Institute for Household Electric Appliances Inspection Report (No. 20m²: In a bedroom of 20m², with a ceiling height of 3m when the device is running at maximum output, a single-cycle purification time is calculated by: room area x room height ÷ PM CADR. *10min purification for a living room of approx. Calculated based on the PM CADR of Xiaomi Smart Air Purifier 4. *6660L of purified air per minute: Refers to the clean air output when the product is operating at maximum output. Tested based on GB/T 18801-2015 standard. * 400m³/h Particle CADR: Data from China Testing & Inspection Institute for Household Electric Appliances Inspection. ![]()
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