The mask that filters bacteria in the air, supports your breath with a fan while the LED lights provide skin therapy and sterilization. The Revolution, CX9 CX9 is equipped with the filter and function of the highest specifications. It offers the safest mask the world has ever seen with a special cover of aseptic silicone, the same material that is made for medical equipment purposes. Moreover, the ergonomically solid 3D design makes for comfortable use even for long hours. CX9 is also under continuous improvement not only on the function, but also for the light and slim wearability along with a modern and trendy design. With the use of a 4-ply filter, the CX9 filters everything from ultra-fine particles to pollen and bacteria that are easy to miss with disposable masks. Despite the strong filtering function, the exclusively developed cover valve allows smooth breathing by allowing airflow for inhaling and exhaling. In addition, CX9’s lightweight, slim fit design on top of the high specification filter is optimized to keep ourselves protected from the ever-present germs and viruses in our lives. Especially, research shows that the number of germ transmission on a plane and at the airport is 23 times bigger than that of the outside. It tells us that we are exposed to the invisible and uncountable germs and viruses. The slim and lightweight design that is developed to fit on to the face perfectly allows you to wear it for a long time along with the large-sized filter. Thus, it is an advanced mask which you can use in various places like the airport, on the plane, etc. while you’re traveling to help protect yourself from bacteria and viruses. HOW TO USE : CX9: Wear the mask by adjusting the inner skin of silicone to your face to prevent the inflow of external air and then hook the strap on your ear or head for use. After wearing the mask properly, inhale through the 4-ply fine dust filter on both sides of the mask and exhaust through the exhaust valve at the center of the mask. LED: When using the LED option, press the button on the bottom of the controller for 2 seconds. This turns on the blue LED light, and the daily mode begins. When you press the button when the mask is turned on, the LED intensity changes from daily mode -> blocking mode -> beauty mode. If you wish to turn off the LED earlier, press the controller button for 2 seconds. HOW TO ASSEMBLE : * Filter After firmly fixing the controller on the center of the external case, fasten by turning the pin and then connect the silicon cover to the joint part on the external case. Grab the front part of the mask and connect the filter cap by adjusting it to the form of the protruding part on the inner side of the external case. Then hang the ear hook or strap on the deco part on both sides and adjust the length for use. The diameter of the replaceable mask filter is 45π and inner surface doesn't have any pattern and feels rough. The outer surface has a mosaic pattern