Description:Material: Made of high quality ABS plastic. durable and lightweight.Small-Sized and USB-Powered: The size of portable air filter is 8x8x12.5cm. And it is powered by USB. You can purify your personal spaces like car, bedroom and office. Silent Air Filter: reduces noise levels to a near-silent 30dB, ensuring the air filter won’t get in the way of a good night's rest.The powerful air turbine duct system and activated carbon filter cotton net can effectively absorb formaldehyde and peculiar smell.Perfect for any space, Bedroom, Home, Kitchen, Office, Large Room, living room.Specification:Material: ABS PlasticSize Chart:8x8x12.5cm/3.15x3.15x4.92inchPackage Includes:1 Piece Air Filter1 Piece USB CableNote:1. Please allow slightly error due to manual measurement.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.3. Wish you a wonderful on-line shopping!