This is a light-weight, odor-free fan, you can place it on your picnic table to keep flies from dive-bombing your food, so you can finally enjoy a conversation over an outdoor meal without swatting flies all the time. Features: No more nasty, disgusting bugs crawling all over your sweet treats. The dots refract/bend light which scares the insects. In their little fly minds, the bending colored lights are not normal in nature and it appears dangerous to them. They will choose to go somewhere else. Blades come to a stop if something touching them, then resume as soon as the obstacle is removed. No harm to human, safe for using. Specifications: Main color: black, silver, gold (optional) Main material: ABS+PVC Battery: 2 * AA battery (not included) Item size: 240 * 82 * 82mm / 9.4 * 3.2 * 3.2in Item weight: 139g / 4.9ounce Package size: 255 * 86 * 86mm / 10.0 * 3.4 * 3.4in Package weight: 221g / 7.8ounce Packing List: 1 * Fly Destroyer 1 * USB Cable