The JISULIFE Portable Handheld Fan is a compact and versatile device that serves as a fan, power bank, and flashlight. It is designed for use both indoors and outdoors, making it perfect for travel, camping, and outdoor activities. The fan is powered by a built-in battery that can operate for 14 to 21 hours, depending on the speed setting. The device is also USB rechargeable, making it convenient to recharge the battery from a power bank, laptop, or other USB-enabled devices. The fan has a foldable design that makes it easy to store and carry around, while the blue color adds a stylish touch to its appearance. Additionally, it operates quietly, making it suitable for use in a library or other quiet environments.