ENERGY SAVING - Decrease your electricity usage by 86% when you replace your 50W track light bulb with a 7 watt GU5.3 LED bulb. Reduce re-lamp frequency with an LED spot light bulb that lasts more than 25x longer with 25,000 hours, or 22.8 years, of lifetime when used 3 hrs/day, compared to halogen MR16 lights.