Transparent three-color mixed, 300 ultra-silent motor, using 18650 1200MAH lithium battery. Triggering the switch for the first speed of wind, then triggering the second speed of wind, then starting the third speed of wind, and then triggering the fan to stop. The white light will always be on when the fan is working. When the fan is working, the switch is often pressed for 2 seconds, and the green light will always be on while applying ice. If the ice is pressed for 2 seconds, the green light will always be off. The built-in IC charging circuit for lithium batteries has over-charge and over-discharge protection. When the battery is charged, the corresponding gear indicator light will always be on, and the full charge indicator light will go out. Charging is safe and reliable. It is used for 4 hours in slow gear, 3.5 hours in mid-range, and 2.5 hours in fast gear.