The USB air purifier is a compact and quiet air purification appliance designed for home, office, or dorm room use. Featuring high-efficiency particulate air filter and activated carbon filtration, it effectively clean dust, particles, smoke, and odors, ensuring clean air for bedrooms, living rooms, or classrooms. Its built-in aroma diffuser adds a refreshing scent, while the USB-powered design allows easy connection to laptops, power banks, or adapters, making it a portable and essential air purifier for small spaces. Features -Noise level: <36dB -Air purifier air volumes: 50 cubic meters/hour -Power supply: USB -Applicable area: 21square meters (inclusive) - 30square meters (inclusive) -Power: 5W -Current: 1A -Color:White -Material:ABS - Size: 27.00X17.50X17.50cm/10.61X6.88X6.88in -Efficient air purification: USB air purifier effectively cleans dust, smoke, and odors, ensuring clean air for your bedroom or dorm room -Quiet operation: designed for quiet air purification, this small air purifier operates silently, perfect for bedrooms, offices, or classrooms where noisefree environments are essential -Portable and USB powered: compact and lightweight, this mini air purifier is powered via USB, ideal for dorm room essentials, travel, or use in apartments and small spaces -Dualspeeds modes: two adjustable fan speeds allow you to adjust air purification levels, providing fresh and clean air for your living room, bedroom, or office with ease -Aromatherapy function: builtin aroma slot disperses a refreshing fragrance while purifying the air, creating a relaxing and pleasant atmosphere in your home or workspace Package list: 1 x Air purifier 1 x USB cable