Partsam High power 4 LED Amber/Yellow 4W 12V Car Truck Security Vehicle Warning Strobe light All automobiles and devices equipped with a 12 or 24 Volt DC power source.Universal fit for any cars, SUVs, or trucks 4 LED Car Truck Emergency Light Bar Hazard Strobe Warning Amber/Yellow Each unit consists of 4 high intensity LEDs with optic lenses. It has 13 different flashing patterns. No pollution, no noise, no electronic interference, more efficient.