Ultra Long Battery Life: 3000mAh Monster USB Fan, cools all day long without stopping. 12 Hours Battery Life at Low Charge Travel Gadgets: Based on 3 hours of daily use, it can support 4 days of light demand, and commuters only need to charge 1-2 times a week Smart Digital LED Display: Hand fan with smart LED display Real-time display of remaining power and current speed, accurate prediction of usage time, working status at a glance Lightweight and Portable: Handheld fan only 188.5g weight, 52.9mm slim body, one-handed grip, easy to put in a backpack/bag, the snap closure buckle, can be easily used as a mini desk fan, can also be used as a portable hanging bag, home, on the go, travel and all summer scenarios essential Five Variable Speed Levels: Mini handheld fan from quiet gentle wind to strong cool feeling, freely switchable, office study without disturbing people, outdoor sports enjoy the coolness The highest speed 6 m/s super strong wind: hand fan 9W high-performance motor, with