[Mini USB Rechargeable Fan]-- Cooling desk fans are built with 500mAh rechargeable lithium battery, 3 adjustable speeds. The small size and weight designed for children.The lanyard design frees your hands and perfect for traveling.(Note:Please full charge it before using it) [3 Adjustable Speed Fan& Enjoy Cool Summer]-- The handheld fan has 3 Adjustable Speed Level -- natural wind/cool wind/strong wind, just adjust the appropriate fan speed by pressing the power button repeatedly. Equipped with 5pcs fan blades which are made of ABS material, strong and durable produces a strong and soft airflow. Never worry about the outdoors even the temperature is so high. Just enjoy your cooling summer with this must-have. [Convenient Design of Portable Fan]-- The mini fan weighs only 90 grams, That you can hang it around your neck with a lanyard without any pressure. Even if your child uses it, it will not bear weight pressure. You can put it in a backpack or handbag or even in your pocket when traveling outdoors. This simple and compact design is particularly suitable for summer travel or outdoor sports. [Rechargeable Battery & Energy Source]-- This handheld fan built with 500mAh rechargeable lithium battery, With micro-USB power port, the USB electric fan can be recharged with USB charger, laptop, computer, power bank, car power ban and other USB-enable devices.