T Tocas&reg; 16 Led High Intensity LED Windshield Emergency Hazard Warning Strobe Lights - Red/white Purchase comes with one strobe light unit and 3 suction cups and installation bracket Size:8" ( wide ) x 1.6" ( height ) x 5.1" ( depth ) Can be seen upto 1/4 mile Upto 50,000 hrs life expectancy while consuming less power then standard bulbs All vehicles equiped with a 12 volt cigarette adapter.