The EcoSmart 7-Watt R20 LED Flood Light Bulb uses only 7-Watt and lasts up to 25,000 hours. This LED bulb is energy efficient, can last up to 23 years and saves you $118.25 in energy costs over its life. The daylight bulb may be used indoors and is dimmable for customized light. Brightness: 550 Lumens Estimated yearly energy cost: $.84 Life: 22.8 years (based on 3 hours per day) Light appearance: 5000K (daylight) Energy used: 7-Watt (equivalent to 50-Watt standard incandescent light bulb) Lumens per watt: 50 Uses 85% less energy compared to standard incandescent light bulb Ideal for use: recess and track lighting Shatter resistant Contains mercury: no