Make your air good again with the Brava 5 stage 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 the Brava packs powerful air purification performance from a small, discreet footprint. The Germicidal UV-C defence technology helps kill viruses and germs, 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 severe respiratory 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 your 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 invisble to the 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- heaviliy 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 unit.