Color: white,blue, green Material: ABS+metal Size: 11*4*3cm Weight: 40g feature: 1. Multifunctional negative ion air purifier, environmentally friendly and harmless, low noise, plug and play, no need for filters and consumables. 2. This mini air purifier can release 20 million negative ions per cubic meter to purify the surrounding environment anytime and anywhere, allowing you to breathe fresh and clean air. 3. It can effectively purify the air, purify smoke, absorb formaldehyde, isolate PM2.5, remove allergens, eliminate germs, and help you stay away from respiratory diseases. 4. The lightweight body of less than 50g, USB in-line power supply, convenient for you to use in the car, allowing you to breathe fresh air anytime and anywhere during the journey. 5. Suitable for all kinds of people, especially children, the elderly, pregnant women, people with allergies to pollen, people with sensitive sense of smell. 6. Applicable scenarios: The product is suitable for a variety of scenarios, such as hospitals, living rooms, offices, bars, bathrooms, kitchens, etc. Negative ion concentration: 20 million/cm Power plug type: USB How it works: negative ions Noise: 36dB Air volume of air purifier: 301-400 m/h Applicable area: 31-40