Magnetic Flower bottle mode of operation as an hourglass. Both sides can be used, via the detection of air quality, detect when the poor air quality in the state, The upper side will fall magnetic powder down, and the lower side have the electromagnet to adsorption, the whole patterns will gradually into a flower appearance,To let us see the air quality visible, and you can know the air quality is good or bad  by flower became  larger or smaller. The next time when you want to detect air quality,just turn 180 degrees to other direction to restart.