The Westinghouse 20 watt (100-watt) Dlr64 utility LED light bulb with medium base can reduce energy and operating costs up to 80 percent compared to a standard incandescent bulb with the same brightness. This LED lasts over 22 years and costs about 2 a year to operate, versus a 100-watt incandescent bulb, which costs about 12 a year to operate and only lasts 2 years. this LED saves about 219 in energy costs over the lifetime of the bulb compared to an incandescent bulb. Why buy 12 incandescent bulbs when one LED lasts over 22 years, using less energy and saving you money this light bulb produces an inviting warm white light and is perfect for overall and task lighting, it turns on instantly. With a sleek flat design it is perfect for use in closets an utility rooms and is suitable for damp locations. LEDs contain no harmful mercury. Westinghouse is a global brand with a simple philosophy: make life easier for everyone who buys its products. Westinghouse products are designed for exceptional quality, reliability and functionality. Based on burning 3 hours per day at 11 cents per kilowatt hour for 22 years or 25,000 hours. Product reference number 03198.