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.Color: Green.18 different selectable strobe patterns with a push of a button to cycle through modes.Brighter and more effective than standard LED strobe lights.Memorizes the last pattern used.Compatible with:All vehicles equiped with a 12 volt cigarette adapter.Product includes:1 x Strobe unit with suction cups and screwsEasy to use no manual