MFRESH FB50 Ozone Ionizer, Air purifier, Air Cleaner Ideal for Small-Medium Space: Cover all angles up to 323sq.ft. Adjustable ozone output 10-50 mg/hr Quiet and Low Consumption Operation: Whisper quiet operation generate noise less than 34 dB, and consume power less than a light bulb Disinfection and Remove Odor: destroys mold, bacteria and viruses, no corner left behind. Remove stale, bad air. Mini Unit and Wide Input Voltage Range: a small unit could fit in a filled suitcase, with it has AC 100-240V input voltage that you could travel the world with.