What can a Welov smart air purifier do for you? 1. Filters 99.97% of 0.1 micron particles and even smaller, such as smoke, pollen, pet dander, hair, mites and odors. 2. Relieves sneezing, congestion and seasonal allergies caused by airborne particles. 3. Keep the air fresh and clean and protect your health. 4. Enhance and upgrade your smart home experience Specification Certifications: Ozone Free, Energy Star Certified, CARB, ETL Certified, EPA, CA PROP 65 Certified, FCC Certified. CADR:180 cubic meters/hour/106 cubic meters/hour Applicable area: 161 square feet/15 square meters Noise level: 23db Relevant power: 15W Standby power:<1W Voltage input: AC100-240V, 60Hz Tips about how to extend filter life, 1. Have it running in rooms with closed doors & windows 2. Keep away from the kitchen or bathroom (high smoke & humidity is bad for air purifiers) 3. Avoid