Eye-Catching visibility and safety - The triangle eye light features a distinctive devil's eye lighting design that enhances conspicuity and serves as a clear warning to nearby drivers. Rear-end collision prevention - Installed symmetrically on the rear windshield, it warns from all angles, reducing accident risk and extending the warning range for approaching vehicles. Includes 2 lights for double coverage. Smart, efficient technology - Built-in smart chip delivers effective warning signals for varying driving conditions with energy-saving operation. No manual adjustment is required, and the intelligent interaction system enhances road safety. Easy, compatible installation - Stable adhesive mounting provides a simple, tool-free attachment that is adaptable to most car models on the market. Designed specifically for rear windshield use. Typical use scenarios - Night highway driving: increases rear visibility to prevent tailgating and rear-end collisions. - Urban driving and lane changes: clearly signals your presence to vehicles in blind spots or approaching from behind. - Poor visibility conditions (rain, fog, or mist): improves conspicuity of your vehicle to surrounding traffic. What you get - 2 triangle eye lights designed for rear windshield installation, with adhesive mounting for straightforward setup.