DIRTY AIR RELIEF! LOOK NO FURTHER FOR THE MOST EFFECTIVE LARGE-ROOM AIR PURIFIER ON THE MARKET! No need to struggle with cheap, ineffective and fake "HEPA" Air purifiers. From the intuitive app with its wide range of functionality to the award-winning sleek design, the Core 400S is hard to beat which filters your space in a matter of minutes LARGE PURIFICATION AREA + 360 AIR INTAKE--PERFECT CHOICE FOR YOUR LIVING ROOM/ OFFICE/ KITCHEN/ BEDROOM! The powerful VortexAir technology brings air in from 360-degrees, which is why it can purify your 83㎡ space 2x times an hour H13 HEPA FILTRATION--GIVING YOU THE ABSOLUTE CLEANEST AIR POSSIBLE! The Core 400S not only traps particulate matter like dust, fur, lint and hairdown to the tiniest particles, zero-point-three microns! How big is a micron a human hair is SEVENTY microns thick! You'd need 500 times magnification to see a single micron SENSITIVE AUTO MODE--SET IT AND FORGET IT! With exclusive AirSight Plus Technology, the air purifier measures air quality, automatically adjust the fan speed accordingly, and deliver real-time readings for you! It reads the air—so it can clean the air OPERATES IN TOTAL SILENCE--WHISPER QUIET! If you run both throughout the night. You barely know it's on, sometimes you have to check the display to be sure-it’s that quiet! SLEEP better, BREATHE better, LIVE better.SAVE ENERGY--SAVE YOUR MONEY! We truly know the importance of energy saving, so the maximum power of this purifier is only 24W-you spend less than £0.2 a day-It's a real barn.