LEDHOLYT 40W 17in/44cm Short Row Warning Caution Emergency Light Strobe Working Strip Flashing Car Roof Magnetic Lamp Amber Light Color DC 12-24V 7 different selectable strobe patterns with ON/OFF and switch button. Up to 50000 hrs life expectancy.1 year warranty. Last pattern recall / memorized function. Easy to install,just put it on the car and fix it. Package includes LED light,power cable.