Features: 1. Multifunctional negative ion air purifier, environmentally friendly and harmless, low noise, can be used when plugged in, without filters and consumables. 2. This mini air purifier can release 20 million negative ions per cubic meter, purifying 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. Lightweight body less than 50g, USB direct plug power supply, convenient for you to use in the car, allowing you to breathe fresh air anytime and anywhere during travel. 5. It is suitable for all kinds of people, especially children, the elderly, pregnant women, people who are allergic to pollen, and those who are sensitive to smell. Applicable scene: The product is suitable for multiple scenarios, such as hospitals, living rooms, offices, bars, toilets, kitchens, etc. Specifications: Name: House Air Ionizer Material: ABS+metal Color: White/Black Size: 113 x 38 x 30mm Weight: 35g Negative ion concentration: 20 million pcs/cm³ Power plug type: USB Working principle: negative ion Noise: 36dB Air volume of air purifier: 301-400 m³/h Applicable area: 31 ㎡-40 ㎡ Package Contents: 1 x House Air Ionizer Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.