Dual Power Supply Mode: This fly fan for tables can be powered by either a USB cable (included) or 2 AA batteries (not included). If using the USB cable, it can be connected to any USB power supply such as a power bank or laptop. However, please note that the USB cable cannot be used for charging the batteries. This fan is extremely -efficient and consumes very little power. It does not produce any kind of disturbing sound. 3 Pieces Fan Blades Design: The fan blades are made of 3 pieces plastic soft blades with a metallic texture on the , the perform with only two fan blades. There are some reflective patterns be printed on the blades. When the fan blades rotate, these patterns reflect light and create a dazzling visual effect. Flying creatures perceive this reflective effect as a danger and from the area. Creating Comfortable Environment: When you're cooking in the kitchen, dining at a restaurant, having a picnic or camping outdoors, flying creatures always seem to be your biggest nuisance. This fan can solve that problem . As the fan blades rotate, those annoying flying creatures 't be to get near your food. It can create a comfortable environment to enjoy clean, food and spend happy times with your friends. Hook Design: This fly fan be placed on a tabletop or hung upside down using the hook at the bottom, making it incredibly convenient to use. A single fan can cover a dining table for 1-2 people