Large wind ultra-long life motor, two wind speed, distribution of a 3.7V 1200mAh lithium battery, battery replaceable, built-in lithium battery special IC charging circuit, battery charging, charging indicator will always be on, full charging indicator will be off, charging safe and reliable, equipped with a V8 USB charging line, the product can also be directly plugged into USB, the battery is full, high-speed block can be used continuously for 2 hours, slow stop for 3 hours.