Is not that "Micro Cooling Fan" it? Yes, really right, if not careful appearance of contrast, I believe that only through the pictures not many people can be subdivided into product differentiation. Just after careful study will find "Micro Cooling Fan" base will be more robust, clean air of secret from this. Air purification fan into the patented 360 ° ultrafine glass fiber filter (H13 HEPA) - this amounted to the total area of 1.1 square meters of microfiber filter ordered made after 254 fold, to ensure that "Micro Cooling Fan"can efficiently capture and filter out all kinds of fine particles, including airborne pollen, bacteria, and other particles PM0.1 is small.