WELCOME TO CRAZY STORE---------------------------------- DescriptionThese solar LED road studs are naturally charged by the sun. As soon as it starts getting dark the LED lights in the stud come on automatically each night for up to More than 12 hours. They have been specifically designed with road safety in mind and can help to prevent serious accidents and emit rather than reflect light. Solar LED Road Studs are also known as solar raised pavement markers, solar reflective lane markers and solar warning devices.Place to Install:1. Dangerous blind corners and sharp-curves, black spots and poorly lit areas.2. Areas with unpredictable weather conditions (coastal roads, foggy areas, wet and rainy regions, etc.).3. Joint intersections, on and off ramps, center lines and dividers, entrance warnings, carpool lanes, bridges, cross and side walks4. Guidance lines, traffic islands, roundabouts and mountain roads.5. Taxiways at airports, bike and pedestrian lanes, aboard ships and watercrafts.6. Entertainment areas, parking lots, hotel entrances and gas stations etc. They can even be seen from a distance of up to 545 yards!!! They are cost effective, easy to install and require no maintenance.Features————----------------------------Warm reminder: The following description of the size of the actual measurement by hand, the error of 2 to 4 cm for a reasonable range, the product photo shoot in the spotlight, coupled with the monitor will produce a certain color difference, but has tried its best to control the color difference to a minimum, please Have received in kind Oh, after the subscript, please be patient, we are overseas sellers, when we shipped out,it usually need 7-12 days arrived,please wait patience,if you have any questions, please contact us promptly.Finally,wish you have a happy shopping! ! !