Features: The air purifier is controlled by a microcomputer and releases an appropriate amount of ozones and negative ions to disinfects and purifys the air. After active ozones sterilizations, the negative ions are purified to maintain a airs freshs. An appropriate amount of negative ions can efficiently removes dust, removes PM2.5 particles, deodorize, eliminate fatigue, and activate oxygen molecule in the airs, allowing us to enjoy the freshs air brought by oxygen carrying negative ions. Ozones is used to capture and kills Staphylococcus aureus and other harmful gases in the bathroom, while quickly decomposing harmful mixtures such as formaldehyde, benzene, carbon monoxides, and ammonia in the airs. Can quickly decompose harmful gases. Three working modes: can be switched with one button to quickly and effectively eliminate odor and purifys air. Never worry about clogging the air purifier filter. No filter need to be applied. When it purifies the air, there is no noise, and you may even overlook its presences. Specifications: Material: Abs Ozones Concentration: 2.02mg/cubics metres Power: 4w Effective Area: 2-8㎡ Voltage: Ac110-240v Size: Approx. 88x45mm/3.46x1.77inch Package Includes: 1x Air Purifier note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.