O-ION 3x Value Pack Ionic Air Purifiers Pro Cleaner with Permanent Filter Ionizer and UV-C (Black) UVGI technology - Kills germs, viruses, bacteria, and other microorganisms that cause disease. Electrostatic Purification - Negative ions reduce airborne pollutants as small as 1 micron such as allergens, pollen, mold, smoke, pet dander, unpleasant odors, dust, and other airborne irritants. Whisper Quiet Fan and Night Light - Silently cleans and sanitizes the air around you. Carbon Filtration - Reduce odors and adsorbs volatile airborne pollutants. Eco-Friendly Design - With just 7.5W of ultra-low energy consumption and NO costly filters to replace, the purifier is a bargain for you and the environment.