The Hella Rallye 4000 X LED Driving Light utilizes a double reflector and high power performance LEDs to produce light while using only 40 watts of power. The maintenance-free LEDs used in the lamps last for more 15,000 hours, according to the company. The Rallye 4000 X LED Driving Light comes in a water-proof metal housing as a complete single lamp kit, which includes mounting hardware for an upright mount and step-by-step mounting instructions. The dimension of the lamp are 5.7” wide by 5” high by 4.5” deep.