Lens and housing assemblies constructed of impact resistant polycarbonate Faster start-up times and low current draw Form/Fit/Function replacements for current product Complies with SAE J592 and J594 when mounted horizontally LED life surpasses the 2k hours of incandescent bulbs by nearly 50x All electronics fully sealed in epoxy, making lamps less susceptible to shock and vibration Superiority only Truck-Lite LEDs can offer : Univolt Technology (12 or 24 volt systems will run without adjustment) Complies with SAE J592 when mounted horizontally between 0 degrees to 34 degrees rollback