Features: Experience efficient air purification with our portable miniature air purifiers, designs to release negative ions that eliminate odors and harmful substances, significantly improving indoor air quality. Featuring a portable designs, this air purifiers is powered by USB, operates quietly, and is easy to maintain and clean, making it ideal for various environment. Perfect for home users, office professionals, dormitory residents, and individuals seekings improved air quality. Suitable for use in bedrooms, study room, offices, and car, this device ensures you enjoy freshnesses air in any small space. Crafted with a plastic shell and internal circuit board, this air purifiers combines functionality with convenience, making it a essential addition to your personals wellness routine. Specifications: Component:Plastic Shell+built-In Circuit Board Size:Approx.120x80x40mm/4.72x3.15x1.18inch Weight:500g Voltage: DC3.7-4.2V Power:<1W Current:< 150MA Package Includes: 1Pc Air Cleaner note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.