Features: Light can prevent burglary at night. It is easy to install and looks clean on the dashboard. Built-in light sensor, this led light will flicker at night and not flicker during the day. (If you want it to flash during the day, you can cover the other end with black paper.) This LED warning light does not require a car alarm system. No wires are needed, just put on the roof of the car with matching glue. Solar energy can be absorbed and stored in high-efficiency solar cells. No need to install batteries. It is powered by solar energy and can be charged via USB. When there is enough sunlight during the day, it may flicker all night. You don't have to put it directly in the sun. The sunlight above the panel is sufficient. If you set the switch to "On" or "Off", you can perform solar charging. You can install this light on car rearview mirrors, car grilles, motorcycle fronts, and rears to warn other vehicles. Specification: Name: Solar Analog Anti-theft Warning Light Electricity: solar, usb charging Light Color:Blue.Red.Blue+Red(Please leave me a NOTE about the color you want,otherwise we'll send it randomly) Shell color: black Size: 5CM*2CM*1CM Function: Intelligent sensor does not work during the day, solar automatic charging, automatic flashing at night Effect: The simulated car anti-theft lamp flashes every 4-5 seconds Package contains 1x Anti-theft warning light