General description This negative ion purifier effectively purifies the air by releasing negative ions through electric brushes, which cause positively charged ions to aggregate and lose their ability to float freely. This process helps to improve mood and health, allowing you to enjoy fresh air in your home. The portable ionizer adopts anion technology to naturally refresh indoor air without filters, effectively eliminating pet odors and other unpleasant smells. For optimal results, it is recommended to use at least one unit in each bedroom, bathroom, dining room, living room, and kitchen. Technical specifications Plug Type: US Plug Voltage: AC 100-240V Color: White Material: Plastic Package Contents: 6 plug-in air purifiers Measurement allowed error: +/- 1-3 cm Usage Ideal for use in offices, gyms, hotels, libraries, cafes, and more. Simply plug into any standard outlet for immediate use. Designed for quiet operation, promoting relaxation and enhancing sleep quality.