Description: The USB air purifiers can capture common household odors, pet odors, and volatile organic compounds. Operates at a whisper-quiet level to contribute to a peaceful sleeping environment. Recommended for spaces around 30-40 Square meters, so it's great for home offices or bedrooms. Features: [USB Port]USB direct plug power supply, can be plugged into the power bank and used on the computer. Suitable for use at home, office, car [High-Efficiency]The air purifiers can circulate room air over many times per hour to achieve rapid purification. [Useful]Air purifiers capture 99.7% of 0.3-micron particles or larger, including pollen, dust, smoke, and dander. [Practical]It guards your kids against pets' hair and pet dander, allows all your family members to breathe pure air. [Great Gift]The air purifier makes a great and valuable gift for your friends and family. Specifications: Color: White; Green; Pink; Black; Purple; Orange; Blue (Optional) Power Supply: USB Material: ABS Style: Modern Applicable area: 30-40 Square meters Occasion: Kitchen, Bathroom, Hotel, Office, etc Package Size: 11.8*4.2*3.6cm / 4.64*1.65*1.41inch Package Weight: 45g / 0.09lb Package List: 1 * Air Purifier 1 * User Guide