Features: -Blades come to a stop if something touches them, then resume as soon as the obstacle is removed, safe to use. -The bugs repellent fan blade rotates smoothly and regularly at 360 degrees, strong wind, instantly repelling mosquitoes. -The silver reflection on the blade can also play a role in repelling. -Fly repellent fan does not contain any harmful chemicals, so it can be safely used in front of children, pets and food. -Lightweight, easy to carry, can be used indoors and outdoors. Specification: Material: aluminum + plastic Color: silver/black Size: 25*8*8cm Rated voltage: 5V Batteries: 2 AA batteries (shipped without batteries!) .