GLAROS Serenity Air 360 Personal HEPA Mini Air Purifier with Aromatherapy Diffuser - Charcoal Grey Personal Clean Air Zone: Surrounds your personal space with over 300 cubic feet of clean air to breathe easily 3 Stage HEPA (F9) Replacable Filter: Captures particles, pollen, and dust. Activated Carbon to eliminate odors and 99.9% of bacteria Aromatherapy Diffuser Attachment: Add your own essential oils to sooth your day away Quiet Motor and Energy Efficient: Operates at less than 36dB and uses 15 watts of power, less than a standard lightbulb