Features 1、USB Plug and Play: This mini air purifier adopts USB port for power, plug and play, support 24 hours safe and stable running. 2、Negative Ion Purification: This portable air purifier adopts negative ion purification, effectively remove dust and odour, relieving congestion. 3、Space Saving: This desk air purifier won't take much space so you can use it anywhere, suitable for home, office and dormitory, etc. 4、Durable Material: This USB purifier is made of premium plastic material, which is safe, sturdy and durable. 5、Perfect Gift: This mini air cleaner with simple and portable design is perfect gift for your friends and family. Specification Item Type: Mini Air Purifier Material: Plastic Application Scenario: Bedroom, Living Room, Kitchen, Toilet, Study, Office, Car, Etc Functions: Odour Removal, Air Quality Improvement Release Quantity: 50Million /cm3 Product Size: Approx. 11.3 x 3.9cm / 4.4 x 1.5in ( Manual Measurement, Slight Error May Exist ) Package List 1 x Mini Air Purifier 1 x User Manual