Portable Fan [Up to 20 Hours of Operation] Mini portable fan, 4000 mAh USB rechargeable, small personal battery-powered fan with 3 speeds for travel/on-the-go use

【Long Battery Life】Compared to other portable fans on the market, this model features a 4000 mAh battery (twice as powerful), offering 5 to 20 hours of battery life after a full charge. Battery life depends on the fan speed: level 1 (20 hours), level 2 (15 hours), and level 3 (5 hours). 【Portable/Desktop Fan】This mini portable fan can be used outdoors or as a mini desktop fan on a table. Its non-slip base ensures optimal stability. 【USB Charging】This mini fan recharges via USB and fully recharges in just 3 hours. It is compatible with USB chargers, car chargers, and computers. 【Mini Size, Easy Cleaning】This mini portable fan is equipped with a removable top cover for easy cleaning: simply turn it counterclockwise to detach it from the fan. Its compact size also makes it easy to carry in a bag. Whether for daily commutes, travel, shopping, picnics, or work, it's the ideal choice. This summer, it will become an essential in your bag. 【Important Reminder】1. Before use and charging, please activate the safety switch located under the base. 2. This product features a single-button control. A short press turns the fan on, while a long press adjusts its speed or turns it off.