Versatile: The top has LED light beads, so it can be used as an emergency light for emergency lighting; also be a knocking device for car glass Switch button instructions: the first flashing, the second always on, the third dome light, the fourth off Lamp body mesh membrane, visible at night, very suitable for parking guide, school crossing, traffic control, construction personnel, etc. It is also good for the safety of dog walkers This product has a certain waterproof feature, can be used in light rain. ABS material, strong and easy to use, impact resistance Battery powered: must be equipped with 2 D batteries (not included), easy to install, use up to 15 hours Any questions before purchasing or during use, welcome contact us, we will reply you at the first time, thank you!