Xprite 31.5" Emergency Warning Traffic Advisor Vehicle Strobe Light Bar - Blue Includes: 1 x Traffic advisor strobe light bar with on/off switch and mode changer button Universal for all vehicle with a 12V power source 7 Different modes/patterns of strobing/flashing with just a press of a button Dimensions: 35.5" ( width ) x 2.5" ( Height ) / Cord length: Over 6 Feet to the power switch and mode selector Brighter and more effective than standard LED strobe lights,it is even visable during the daytime conditions