Feit Electric BPESL13T/GU24/2 900 Lumen Soft White Mini Twist GU24 CFL, Uses Up To 78% Less Energy, Compact Fluorescent, Average Life Up To 10000 Hours This 13-watt Fluorescent bulb is ideal for indoor use It uses up to 78% less energy and lasts up to 10 times longer than standard incandescent bulbs It has GU24 Base cell and is non-dimmable This is an energy star approved product Life: It is durable with a lifespan of 9.1 years/10,000 hours. Does not require batteries Product dimensions: 2 x 6 x 7 inches. Item weight: 5 ounces