Defog your windshield in just minutes. It is easy to install with either a sure grip suction cup for easy removal, or a permanent screw-down base and a standard lighter plug. The PTC ceramic element generates 340 BTU's of heat to quickly defog your windshield. Completely safe, it is warm to the touch but is never hot. The small footprint heater takes up little space. Size 2-1/2" L x 7" W x 4-1/2" H Color Black