EverLast Induction Technology by Full Spectrum Solutions has solved the previous technological setbacks of High Pressure Sodium and LED technology. With virtually maintenance-free 100,000 hour lamp life rating (25+ yrs vs. 5yrs), energy savings up to 70 percent over HID sources, unmatched lumen maintenance (70 percent over 10 years), and twist-lock photocell for automatic on/off control, the EverLast Cobra Head Smart Fixtures are a useful choice for illuminating freeways, highways, secondary roads, off-street areas and parking structures.