Ultra-quiet motor, three-color mixed spray charging fan, built-in 3.7V 300mAh 14500 lithium battery, distributed with a 0.2-meter USB cable, has three wind speeds, fan triggers the switch, frequently press for 2 seconds to spray, spray timing to stop for 5 minutes, built-in IC charging circuit for lithium battery, with over-charge and over-discharge protection, when the battery is charged, the corresponding indicator light will always light, and the full charging indicator light will go out. Charging is safe and reliable. The fan is used in slow gear for 2 hours, mid-range 1.5 hours, Fast shift for 1 hour.