Adopt more complicated backward inclined centrifugal fan, improved impeller cutting wind. While increasing the air output by 15%, the noise of 5db (A) is reduced, and the clean air continues to output steadily. - The purification efficiency is high, and the sterilization rate is 99.99%, which can remove second-hand smoke, exhaust gas, bacteria, PM2.5. This car air purifier is powered by USB and has a compact appearance. It supports home or office use and brings fresh air home. After turning on the silent mode, you can hardly notice that the purifier is working. At this time, the motor consumes only 1W, which is more energy-efficient. - Hidden warehouse door] Designed to replace the filter element, the concave and convex points of the fuselage can be opened when the counterclockwise direction is misaligned, and the warehouse automatically shuts down after opening, intimate anti-pinch, safer to use. - Open the APP, check the air quality in the car in real time, and adjust to your own working mode according to actual needs. At the same time, there is a reminder to replace the filter element in the APP, intimately inform the degree of filter wear. - Features:Name: Air Purifier - Weight; 500g - Material: Aluminum alloy - Product size 175 × 175 × 70mm - Input: 5V == 2AWorking temperature: -20 ° C ~ 70 ° CStorage temperature: -30 ° C ~ 85 ° CIn addition to PM2.5 filter size: diameter 164mm X height 50mm - Recommended area: 53 cubic meters