SUPER BRIGHT: 30 Hi-intensity LED chips with high visibility in daylight, midnight, raining or fog days. Improve the drive security and avoid accidents.EASY INSTALLATION: comes with strong magnets (Test go up to 60mph but not fall off) and 12-24V switch plug. Just need attach the strong magnets on any metal exterior of cars and plug the switch plug.FLASH PATTERNS: 7 different flash patterns with a independent switch to cycle through modes. Memorizes last pattern used (recall last pattern)PANEL DIMENSIONS: 12" (W) x 6.15" (D) x 3" (H) / Cable length: Straight 13 FT with on/off power and independent control switch, plug and play / Up to 50,000hours lifespan expectancy.Compatible with all those vehicles equipped with a 12-24V power socket. Great for emergency vehicles, postal service, construction vehicle, safety warning etc.