This fan is multifunctional which can be used as a fan, a power bank and a LED light. As a fun, it has 3 different settings: low, medium and high. Press the switch button to change the setting you want. Hanging the fan in your neck and make your hands free. As a power bank, rechargeable 4000mAh battery operated(built in), no need to buy extra batteries. With USB cable, the USB fan compatible with any device with USB port (laptop, desktop, power bank, socket, power outlet) to get charged. It's a must-have for the beach, pool, camp, hiking, travel, picnic, park, concert or sporting event! As a gift to your friends, it is a good choice
