Three-color mixed, digital cooling fan, 18650 1200MAH for battery, 300 motor, 199 wind speed, switch triggers the wind speed of gear 1, then start the wind speed of gear 50, then trigger the wind speed of gear 100, then trigger the wind speed of gear 150, then start the wind speed of gear 199, and at the same time, the corresponding gear display is displayed on the display, and the fan is triggered to stop working. Press the switch frequently for 2 seconds, the cooling fins will work, and at the same time, the cooling mark will be displayed on the display. At the same time, the fan will work at normal speed. Press the two cooling fins frequently to stop working. The cooling fins can only work when the fan is working. The display automatically turns to power display for about 5 seconds after the fan works normally. During charging, the % number on the display flashes, and the charging number corresponds until it reaches 100%