These dimmable LED Reflector bulbs are designed to give you up to 25,000 hours of reliable service. That means fewer replacements for difficult to reach bulbs. These Energy Star Certified lamps provide the same output as a 50 watt bulb while only using 8 watts of energy. With 3 hours of daily use the annual operating cost is only $0.96 per bulb. (Based on $.11/kWh) And LED technology means they are cooler to the touch when lit and instant-on at full brightness with no warm up time. The medium (E26) base means they will fit in standard recessed lighting and many other fixtures. ETL Listed for dry location installation. Ideal for both residential and commercial installations.