- 4000mAh Rechargeable Battery: Enjoy long-lasting cooling with this clip-on fan, featuring a built-in 4000mAh rechargeable battery. It operates for 4 to 20 hours on a full charge and fully recharges in just 3 hours, providing reliable performance for your needs. - Powerful Yet Quiet: Equipped with an upgraded brushless motor, this stroller fan delivers strong airflow while maintaining a quiet operation. With four adjustable speeds, it ensures a comfortable breeze for peaceful sleep or focused work. - Durable Clip Design: The fan boasts a robust frame with a 3-inch thick clamp and a 2-inch wide opening, allowing it to securely grip surfaces up to 2 inches thick. The silicone-lined serrated clamp prevents damage, making it safe for various applications. - Low Power Indicator: Stay informed with the high-definition digital display that shows current wind speed and remaining battery life. The low power reminder feature allows you to plan charging in advance, ensuring you’re never caught off guard. - 360-Degree Rotation: Easily adjust the fan to your desired angle with its full 360-degree rotation capability, allowing you to direct airflow precisely where you need it for optimal comfort. Use Scenarios: 1. Ideal for strollers during warm weather, keeping your child cool and comfortable on the go. 2. Perfect for camping trips or outdoor activities, providing a refreshing breeze wherever you are. 3. Great for personal use at your desk, ensuring you stay cool while working without disturbing others.