3000mAh Battery Capacity Upgrade mini fan features a 3000mAh battery that provides long-lasting power for the fan and can also serve as an emergency power source to charge your cellphone. 3 Wind Speeds This practical USB mini fan offers one-key operation with three wind speed settings: soft, natural, and strong. Easily select your preferred speed by pressing the switch button. Hands-Free Design Equipped with a strap that can be attached to both sides of the base, this mini fan can be worn around the neck. Ideal for shopping, hiking, beach outings, and traveling, it delivers hands-free cooling comfort. Cellphone Holder Built-in 90-degree adjustable phone stand with a 270-degree rotating head design allows you to securely hold your phone and adjust airflow direction. Combines fan functionality with convenient device support. Operation Instructions 1. Before first use, charge the mini fan for approximately 2 hours. 2. Due to the built-in battery, avoid using the fan in excessively humid or high-temperature environments (above 104°F). 3. To protect the motor, do not operate the fan while it is charging. 4. Children under 10 years old should use this product only under adult supervision.