T Tocas 16 Led High Intensity LED Lamp Car Auto Windshield Police Emergency Hazard Warning Strobe Lights - Red/Blue Purchase comes with one strobe light unit and 3 suction cups and installation bracket 18 Different modes of flashing /strobing with a push of a button to cycle through modes.,Memorizes last pattern used ( recall last pattern ) 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.