Specification: Product name:Leafless hanging neck fan Battery capacity:1800 mAh Voltage :5 (V) Wattage:5 W Running time:4-16 hours Interface Type:Micro USB Main Feature: . Wide range of applications：Use for both indoor and outdoor activities, office, subway, traveling, camping, picnic, hiking. . Air volume level 3: weak wind ＞ natural wind ＞ strong wind . The neck fan has 78 ventilation holes that keep the face cool and can keep the makeup. It can be used safely by children and adults. . Wingless design, you don't have to worry about hair being caught by fan blades. . Equipped with 1800 mAh battery, the battery life is approx. 16 hours . Half-closed air inlet, dust and sweat proof. Package Include: . Hands-free Personal Fan. . Micro USB Charging Cable . User Manual.