The two layers of fan blades rotate simultaneously, increasing airflow for more powerful cooling. With its wider reach, the dual blades also provide a more gentle three-dimensional breeze. Switch between natural breeze or direct blow. Set the fan speed to anywhere between 1 and 100 in the Mi Home app, to achieve your desired airflow. The fan uses a DC copper-wire motor, which has higher operating efficiency and longer service life than an aluminium-wire motor. It provides constant speed for more stable ventilation and lower power consumption. Its wing-shaped blades produce a maximum air flow of 20m³/min*.