ENERGY SAVING - Decrease your electricity usage by 86% when you replace your 50 watt halogen spot light bulb with a 7W MR16 dimmable LED light bulb. Reduce re-lamp frequency with a light that lasts more than 12x longer with 25,000 hours, or 22.8 years, of lifetime when used 3 hrs/day, compared to halogen MR16 lights.