1.Super wide acceptable voltage range: 9-32V,suitable for cars, bus or even truck; 2.Low startup voltage, easy for lighting up ; 3. Super excellent anti-interfering function, do not interfere the other electronics equipments on the car; 4. Stable brightness, never weaken down ; 5.Super resistant against heat, controlled by high intensity digital microchip; 6. super long life-span for 3200 hours.