6-inch fan three-color mixed desktop charging fan, factory version distribution of a 3.7V 1200mAh18650 lithium battery, distribution of a 0.5m USB cable, can be required to add an additional 18650 battery, three wind speed, fan trigger switch, built-in lithium battery special IC charging circuit, with overcharge and discharge protection, the corresponding gear indicator will always light, full charging indicator will be off, charging safe and reliable, slow use for 3 hours 2.5 hours for middle gear and 1.5 hours for fast gear.