Quality electronic components and advanced Grote circuit design provides electronically quiet operation, consistent light output, and protection from voltage spikes and eletromagnetic interference;Premium LEDs produce white light that reduces eye fatigue and operator stress;Rugged design withstands heavy vibration, corrosion, moisture, and dust;Sophisticated reflector optics put more light on the task;Multiple connector options, DT-2 pin and Amp SuperSeal, increase operational flexibility;Advanced circuit design and thermal management ensures consistent light output for the life of the lamp;Both models are rated over 40,000 hours