Three-color mixing, refrigeration with lights and digital charging fan, brushless motor driving, 199 speed battery uses 21700 3000MAH lithium battery. Switch: Press the switch for a long time to turn on the machine, and the wind speed of the fan at gear 1 is working and the display displays 1; trigger the switch again, and the wind speed of the fan at gear 50 will display 50 at the same time; trigger the switch again, and the wind speed of the fan at gear 100 will display 100 at the same time; trigger the switch again, and the wind speed of the fan at gear 150 will display 150 at the same time; trigger the switch again, and the wind speed of the fan at gear 199 will display 199 at the same time; Triggering the switch again, and the wind speed of the fan is at the same time that the display displays 1, so that the fan can cycle work. Pressing the fan for a long time will shut down. After the fan works for about 5 seconds, the display automatically jumps to the battery level display. Ice application: When the fan is working, the ice application switch is triggered, and the ice application works. At the same time, the ice application sign is displayed on the display. Then the ice application switch is triggered and the ice application sign is deactivated. Lighting: Trigger the light switch, and the four LED lights will have a brightness at the first level; trigger the switch again, and the four LED lights will have a brightness at the second level (brighter); trigger the switch again, and the four LED lights will flash; trigger the light to go out. When the lamp is working, the display displays the percentage of battery power. Charging: During charging, the display displays the battery level, and the % sign on the display flashes.