Plasmacluster Ion Technology, emitting positive and negative ions; Efficient in: killing bacteria, viruses, allergens, molds; Removing odours and static electricity; Improving skin moisture; Effective air purification thanks to 3 levels of filtration and perfect air circulation guaranteed by 20° back outlet of air; Ion shower for extra high ion density; Available Settings 4: auto / max / low / sleep; Air Flow Angle 20°