HONETECH(TM) Bright 36W LED Bulb Police Emergency Vehicle Car Truck Traffic Advisor Strobe Lights Super Bright 12 *3W LED Strobe lights for Car Windshield Working Voltage: DC12V, Power: 36W( 3W/Bulb) Light Size approx.14"* 3"1/6* 2"2/5 Package includes 1x Strobe light unit Easy to install,plug into a 12V cigarette lighter.