The Brava 5 stage air purifier featuresTrue HEPA filter with 99.97% efficiencyGermicidal UV-C defence technology tackles germs12 hour run back timerSuitable for room size up to 25m?Make your air good again with the Brava 5stage air purifier. What sets the Brava apart is its powerful 5-stage air purification performance incorporating True HEPA Filtration and Germicidal UV-C Defence Technology from its very compact design. Many competitor air purifiers are large and bulky, however, theBrava packs powerfulair purification performance from a small, discreet footprint. The Germicidal UV-C defence technology helps kill viruses and germs* (*Independently tested for inactivation of Influenza A Virus H1N1 99.99% kill rate at the Guangdong Detection Centre for Microbiology),whilst the multi-stage 3 in 1 pre, carbon and True HEPA filter captures 99.97% of airborne particles including pollen, dust and microscopic particles as small as 0.3 microns. The Brava will help remove these microscopic particles invisible to the human eye from the air e.g. pet dander, dust mites, pollen and VOC's (volatile organic compounds) which are known to trigger hayfever and other severerespiratory conditions, including chronic obstructive pulmonary disease (COPD). The Brava also features Ion Fresh technology which discharges negative ions that cling on to dirty positive ions, helping make the air you breathe feel fresher. An additional feature on the Brava is the Particulate Matter sensor (PM) which measures PM particles down to 2.5 microns in size (particles invisible tothe human eye). This displays how dirty your indoor air is and provides a visible PM reading and a colour changing light to indicate how clean or dirty you air is (Blue- clean, Yellow- moderate, Amber- lightly polluted, Red- heavily polluted. The Brava also has an auto mode, which will independently vary the speed of the Brava according to how dirty the air is and will automatically adjust the speed of the unitThe Brava's footprint is small (just under 24 cm in diameter) and stands only 46cm high, so unlike many competitorswhich is significantly more bulky it is rather discreet. Its performance is optimised for large-sized rooms up to 25m? making it ideally suited for living rooms or very large bedrooms. Itwillpowerfully cleanthe air within the room just over every 15 minutes (nearly 4 air changes per hour) improving your IAQ (indoor air quality). It features a'sleep mode', which switches off all visible lights on the product, whilst the 4-speed fan, has alow-speed setting ideal for nighttime use/ quiet running. In contrast, the turbo settingcomes in handy if you wish to use it for fast odour removal in the kitchen after cooking, or just simply quick cleansing of the air in a dust-ridden room or where a window has perhaps been left open where pollen or fumes from passing traffic may have entered.The Brava also features a 12-hour runback/ count down timer so it can be operated for a set period of time before switching off. In addition, it comes with a 3-yearguarantee upon registration for your peace of mind.Make your air good again with the Brava 5stage air purifier.